{"title":"Exhaust","description":null,"products":[{"product_id":"speed-engineering-2016-camaro-lt1-lt4-2-inch-longtube-headers","title":"Speed Engineering 2\" Longtube Headers — 2016–2024 Chevrolet Camaro SS \u0026 ZL1 | LT1\/LT4 6.2L | 25-1061","description":"\u003cp\u003eThe factory exhaust manifolds on your 6th Gen Camaro SS or ZL1 are one of the first restrictions holding back your LT1 or LT4. Speed Engineering's 2\" longtube headers are a direct-fit, dyno-proven upgrade — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel for maximum exhaust flow and over 25 rear-wheel horsepower over stock. Speed Engineering X-pipe kit is required for installation and sold separately.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 2\" Port-Matched Primary Tubes\u003c\/strong\u003e — Maximum flow from cylinder head to collector for aggressive LT1\/LT4 performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on 6th Gen Camaro applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6.2L LT1 and LT4 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro SS — LT1 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2016 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro ZL1 — LT4 6.2L Supercharged\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2017 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eIs an X-pipe included with these headers?\u003c\/h5\u003e\u003cp\u003eNo. These are headers only. The Speed Engineering X-pipe kit is required for proper installation and is sold separately.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between these headers and the 2\" full kit (25-1061)?\u003c\/h5\u003e\u003cp\u003eThe full kit includes these headers plus the Speed Engineering X-pipe, header bolts, MLS gaskets, and O₂ extension harnesses. These headers include just the headers themselves. Choose the full kit for an all-in-one purchase; choose headers only if you already have or plan to source the X-pipe separately.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between these 2\" headers and the 1-7\/8\" headers (25-1046) for this platform?\u003c\/h5\u003e\u003cp\u003eThe primary tube diameter is the key difference. The 2\" headers deliver maximum exhaust flow for more aggressive builds with supporting modifications such as a cam, heads, or forced induction. The 1-7\/8\" headers are a strong choice for most street and performance builds across a broader RPM range.\u003c\/p\u003e\n\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's 2\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 6th Gen Camaro SS and ZL1 applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible with the 6.2L LT1 found in the 2016–2024 Camaro SS and the 6.2L LT4 found in the 2017–2024 Camaro ZL1.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\n\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\u003cp\u003eYes. Standard graphite manifold gaskets are included.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is an X-pipe included with these headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are headers only. The Speed Engineering X-pipe kit is required for proper installation and is sold separately.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between these headers and the 2\\\" full kit (25-1061)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The full kit includes these headers plus the Speed Engineering X-pipe, header bolts, MLS gaskets, and O₂ extension harnesses. These headers include just the headers themselves. Choose the full kit for an all-in-one purchase; choose headers only if you already have or plan to source the X-pipe separately.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between these 2\\\" headers and the 1-7\/8\\\" headers (25-1046) for this platform?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The primary tube diameter is the key difference. The 2\\\" headers deliver maximum exhaust flow for more aggressive builds with supporting modifications such as a cam, heads, or forced induction. The 1-7\/8\\\" headers are a strong choice for most street and performance builds across a broader RPM range.\"}}, {\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 2\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 6th Gen Camaro SS and ZL1 applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with the 6.2L LT1 found in the 2016–2024 Camaro SS and the 6.2L LT4 found in the 2017–2024 Camaro ZL1.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\"}}, {\"@type\": \"Question\", \"name\": \"Are gaskets included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Standard graphite manifold gaskets are included.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3)\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228083101744,"sku":"25-1061","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2016_Camaro_2_Longtube_Headers_LT1_LT4_Engines_25-1061.jpg?v=1762205612"},{"product_id":"speed-engineering-2016-camaro-lt1-lt4-6-2l-longtube-xpipe-kit","title":"Speed Engineering Longtube X-Pipe Kit — 2016–2024 Chevrolet Camaro SS \u0026 ZL1 | LT1\/LT4\/ZL1 6.2L | 25-1047","description":"\u003cp\u003eComplete your 6th Gen Camaro exhaust build with Speed Engineering's 3\" longtube X-pipe kit. Built from 304 natural stainless steel with mandrel-bent tubing, TIG-welded construction, and 3\" band clamps included. Dyno proven and designed to work exclusively with Speed Engineering longtube headers on LT1, LT4, and ZL1 6.2L Camaro applications.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This X-pipe is designed to work with Speed Engineering longtube headers only. It is NOT compatible with factory exhaust manifolds or any factory exhaust manifold equipment.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eX-Style Crossover Design\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with LT1, LT4, ZL1, and 6.2L Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4\/ZL1 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2016 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4\/ZL1 6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4\/ZL1 6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4\/ZL1 6.2L\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4\/ZL1 6.2L\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4\/ZL1 6.2L\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4\/ZL1 6.2L\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4\/ZL1 6.2L\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4\/ZL1 6.2L\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4\/ZL1 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill this X-pipe work with my factory exhaust manifolds?\u003c\/h5\u003e\n\u003cp\u003eNo. This X-pipe is designed to work with Speed Engineering longtube headers only. It is not compatible with factory exhaust manifolds or any factory exhaust manifold equipment.\u003c\/p\u003e\n\u003ch5\u003eWhat size tubing does this X-pipe use?\u003c\/h5\u003e\n\u003cp\u003eThis X-pipe uses 3\" mandrel bent tubing throughout with 3\" band clamps included for installation.\u003c\/p\u003e\n\u003ch5\u003eWhat engines is this X-pipe compatible with?\u003c\/h5\u003e\n\u003cp\u003eThis X-pipe is compatible with LT1, LT4, ZL1, and 6.2L engines found in 2016–2024 Chevrolet Camaro SS and ZL1 models.\u003c\/p\u003e\n\u003ch5\u003eWhat material is this X-pipe made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction and mandrel-bent tubing.\u003c\/p\u003e\n\u003ch5\u003eIs this X-pipe street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will this X-pipe work with my factory exhaust manifolds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This X-pipe is designed to work with Speed Engineering longtube headers only. It is not compatible with factory exhaust manifolds or any factory exhaust manifold equipment.\"}}, {\"@type\": \"Question\", \"name\": \"What size tubing does this X-pipe use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This X-pipe uses 3\\\" mandrel bent tubing throughout with 3\\\" band clamps included for installation.\"}}, {\"@type\": \"Question\", \"name\": \"What engines is this X-pipe compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This X-pipe is compatible with LT1, LT4, ZL1, and 6.2L engines found in 2016–2024 Chevrolet Camaro SS and ZL1 models.\"}}, {\"@type\": \"Question\", \"name\": \"What material is this X-pipe made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction and mandrel-bent tubing.\"}}, {\"@type\": \"Question\", \"name\": \"Is this X-pipe street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41212758360112,"sku":"25-1047","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2016_Camaro_LT1_LT4_Longtube_X-Pipe_Kit_6.2L_Engine_25-1047.jpg?v=1762205701"},{"product_id":"speed-engineering-2016-camaro-lt1-lt4-1-7-8-longtube-headers","title":"Speed Engineering 1-7\/8\" Longtube Headers — 2016–2024 Chevrolet Camaro SS \u0026 ZL1 | LT1\/LT4 6.2L | 25-1046","description":"\u003cp\u003eThe factory exhaust manifolds on your 6th Gen Camaro SS or ZL1 are one of the first restrictions holding back your LT1 or LT4. Speed Engineering's 1-7\/8\" longtube headers are a direct-fit, dyno-proven upgrade — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel for maximum exhaust flow and over 25 rear-wheel horsepower over stock. Speed Engineering X-pipe kit is required for installation and sold separately.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e X-pipe is natural stainless steel.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-7\/8\" Port-Matched Primary Tubes\u003c\/strong\u003e — Maximum flow from cylinder head to collector for aggressive LT1\/LT4 performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on 6th Gen Camaro applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6.2L LT1 and LT4 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro SS — LT1 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2016 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Camaro SS — 6.2L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro ZL1 — LT4 6.2L Supercharged\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2017 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Camaro ZL1 — 6.2L LT4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eIs an X-pipe included with these headers?\u003c\/h5\u003e\n\u003cp\u003eNo. These are headers only. The Speed Engineering X-pipe kit is required for proper installation, is natural stainless steel, and is sold separately.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between these headers and the 1-7\/8\" full kit (25-1046)?\u003c\/h5\u003e\n\u003cp\u003eThe full kit includes these headers plus the Speed Engineering X-pipe, header bolts, MLS gaskets, and O₂ extension harnesses. These headers only include the headers themselves. Choose the full kit for an all-in-one purchase; choose headers only if you already have or plan to source the X-pipe separately.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between these 1-7\/8\" headers and the 2\" headers (25-1061)?\u003c\/h5\u003e\n\u003cp\u003eThe primary tube diameter is the key difference. The 1-7\/8\" headers are a strong choice for most street and performance builds. The 2\" headers deliver maximum exhaust flow for more aggressive builds with supporting modifications such as a cam, heads, or forced induction additions.\u003c\/p\u003e\n\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's 1-7\/8\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 6th Gen Camaro SS and ZL1 applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese headers are compatible with the 6.2L LT1 found in the 2016–2024 Camaro SS and the 6.2L LT4 found in the 2017–2024 Camaro ZL1.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\n\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\n\u003cp\u003eYes. Standard graphite manifold gaskets are included.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is an X-pipe included with these headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are headers only. The Speed Engineering X-pipe kit is required for proper installation, is natural stainless steel, and is sold separately.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between these headers and the 1-7\/8\\\" full kit (25-1046)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The full kit includes these headers plus the Speed Engineering X-pipe, header bolts, MLS gaskets, and O₂ extension harnesses. These headers only include the headers themselves. Choose the full kit for an all-in-one purchase; choose headers only if you already have or plan to source the X-pipe separately.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between these 1-7\/8\\\" headers and the 2\\\" headers (25-1061)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The primary tube diameter is the key difference. The 1-7\/8\\\" headers are a strong choice for most street and performance builds. The 2\\\" headers deliver maximum exhaust flow for more aggressive builds with supporting modifications such as a cam, heads, or forced induction additions.\"}}, {\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-7\/8\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 6th Gen Camaro SS and ZL1 applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with the 6.2L LT1 found in the 2016–2024 Camaro SS and the 6.2L LT4 found in the 2017–2024 Camaro ZL1.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\"}}, {\"@type\": \"Question\", \"name\": \"Are gaskets included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Standard graphite manifold gaskets are included.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228070060080,"sku":"25-1046","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2016_Camaro_1-7_8_Longtube_Headers_LT1_LT4_Engines_25-1046.png?v=1762205770"},{"product_id":"speed-engineering-2016-camaro-lt1-lt4-6-2l-manifold-xpipe-kit","title":"Speed Engineering Manifold X-Pipe Kit — 2016+ Chevrolet Camaro SS \u0026 ZL1 LT1\/LT4 6.2L | 25-1064","description":"\u003cp\u003eIf you're looking to improve exhaust tone and flow on your 6th Gen Camaro SS or ZL1 without removing the factory manifolds or catalytic converters, this is the kit. Speed Engineering's 3\" manifold X-pipe bolts directly to the factory exhaust system, connects both sides through an X-style crossover, and keeps all O₂ sensors in place — no tuning required.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent tubing and TIG-welded construction, this is a clean, no-compromise bolt-on upgrade that delivers improved exhaust tone and flow while working within your factory setup.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e This X-pipe is designed to work with factory exhaust manifolds only. It is NOT compatible with Speed Engineering longtube headers or any aftermarket longtube header system.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eX-Style Crossover Design\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Bolt-On to Factory Exhaust\u003c\/strong\u003e — No cutting, welding, or modifications required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetains Both Front and Rear O₂ Sensors\u003c\/strong\u003e — No check engine light, no tuning required\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with LT1, LT4, and ZL1 6.2L Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2016 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4 6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4 6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4 6.2L\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4 6.2L\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4 6.2L\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4 6.2L\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4 6.2L\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4 6.2L\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Camaro SS \u0026amp; ZL1 — LT1\/LT4 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill this X-pipe work with my longtube headers?\u003c\/h5\u003e\n\u003cp\u003eNo. This X-pipe is specifically designed to work with the factory exhaust manifolds and catalytic converters. It is not compatible with Speed Engineering longtube headers or any aftermarket longtube header system.\u003c\/p\u003e\n\u003ch5\u003eWill I get a check engine light after installing this X-pipe?\u003c\/h5\u003e\n\u003cp\u003eNo. This system retains both the front and rear O₂ sensors in their factory locations, so no check engine light will be triggered and no PCM tuning is required.\u003c\/p\u003e\n\u003ch5\u003eDoes this X-pipe require any cutting or welding?\u003c\/h5\u003e\n\u003cp\u003eNo. This is a direct bolt-on system designed to connect to the factory exhaust manifolds with no cutting, welding, or modifications required.\u003c\/p\u003e\n\u003ch5\u003eWhat size tubing does this X-pipe use?\u003c\/h5\u003e\n\u003cp\u003eThis X-pipe uses 3\" mandrel bent tubing throughout with 3\" band clamps included for installation.\u003c\/p\u003e\n\u003ch5\u003eWhat engines is this X-pipe compatible with?\u003c\/h5\u003e\n\u003cp\u003ePart #25-1064 is compatible with LT1, LT4, and ZL1 6.2L engines found in 2016–2024 Chevrolet Camaro SS and ZL1 models.\u003c\/p\u003e\n\u003ch5\u003eIs this X-pipe street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will this X-pipe work with my longtube headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This X-pipe is specifically designed to work with the factory exhaust manifolds and catalytic converters. It is not compatible with Speed Engineering longtube headers or any aftermarket longtube header system.\"}}, {\"@type\": \"Question\", \"name\": \"Will I get a check engine light after installing this X-pipe?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This system retains both the front and rear O₂ sensors in their factory locations, so no check engine light will be triggered and no PCM tuning is required.\"}}, {\"@type\": \"Question\", \"name\": \"Does this X-pipe require any cutting or welding?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This is a direct bolt-on system designed to connect to the factory exhaust manifolds with no cutting, welding, or modifications required.\"}}, {\"@type\": \"Question\", \"name\": \"What size tubing does this X-pipe use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This X-pipe uses 3\\\" mandrel bent tubing throughout with 3\\\" band clamps included for installation.\"}}, {\"@type\": \"Question\", \"name\": \"What engines is this X-pipe compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Part #25-1064 is compatible with LT1, LT4, and ZL1 6.2L engines found in 2016–2024 Chevrolet Camaro SS and ZL1 models.\"}}, {\"@type\": \"Question\", \"name\": \"Is this X-pipe street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41227878203440,"sku":"25-1064","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2016_Camaro_LT1_LT4_Manifold_X-Pipe_Kit_6.2L_Engine_25-1064.png?v=1762205895"},{"product_id":"speed-engineering-universal-gen5-lt1-lt4-turbo-forward-upward-headers","title":"Speed Engineering Universal Gen 5 LT1\/LT4 Turbo Forward \u0026 Upward Facing 1-3\/4\" Headers | 25-1065","description":"\u003cp\u003eBuilding a custom turbo setup around a Gen 5 LT1 or LT4 engine? Speed Engineering's forward and upward facing turbo headers give you a solid foundation to work from. Built from polished 304 stainless steel with mandrel-bent primary tubes, CNC-machined flanges, and full TIG-welded construction, these headers are designed for custom turbo builds where a universal fit is needed rather than a vehicle-specific application.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e These are completely universal headers not designed for any specific vehicle. A Camaro or Corvette water pump and other supporting components will be required for installation.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-3\/4\" Primary Tubes\u003c\/strong\u003e — Sized for turbo applications on Gen 5 LT engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Short Collector Design\u003c\/strong\u003e — Forward and upward facing for turbo placement flexibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter throughout, no crimping or restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the cylinder head for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolished 304 Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 5.3L, 6.2L, LT1, and LT4 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGM Gen 5 5.3L LT\u003c\/li\u003e\n\u003cli\u003eGM Gen 5 6.2L LT1\u003c\/li\u003e\n\u003cli\u003eGM Gen 5 6.2L LT4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWhat vehicles do these headers fit?\u003c\/h5\u003e\n\u003cp\u003eThese are completely universal headers and are not designed for any specific vehicle application. They are intended for custom turbo builds using Gen 5 LT1 or LT4 engines. A Camaro or Corvette water pump and other supporting components will be required for installation.\u003c\/p\u003e\n\u003ch5\u003eWhat direction do the collectors face?\u003c\/h5\u003e\n\u003cp\u003eThe collectors face forward and upward, making these headers suited for custom turbo builds where turbocharger placement requires that orientation.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese headers are compatible with GM Gen 5 5.3L, 6.2L LT1, and 6.2L LT4 V8 engines.\u003c\/p\u003e\n\u003ch5\u003eWhat size are the primary tubes?\u003c\/h5\u003e\n\u003cp\u003eThe primary tubes are 1-3\/4\" with a 3\" short collector design.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003ePolished 304 stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\n\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\n\u003cp\u003eYes. Standard graphite manifold gaskets are included with the headers.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What vehicles do these headers fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These are completely universal headers and are not designed for any specific vehicle application. They are intended for custom turbo builds using Gen 5 LT1 or LT4 engines. A Camaro or Corvette water pump and other supporting components will be required for installation.\"}}, {\"@type\": \"Question\", \"name\": \"What direction do the collectors face?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The collectors face forward and upward, making these headers suited for custom turbo builds where turbocharger placement requires that orientation.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with GM Gen 5 5.3L, 6.2L LT1, and 6.2L LT4 V8 engines.\"}}, {\"@type\": \"Question\", \"name\": \"What size are the primary tubes?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The primary tubes are 1-3\/4\\\" with a 3\\\" short collector design.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Polished 304 stainless steel with full TIG-welded construction and CNC-machined flanges.\"}}, {\"@type\": \"Question\", \"name\": \"Are gaskets included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Standard graphite manifold gaskets are included with the headers.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41227886788656,"sku":"25-1065","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_Universal_Gen_5_LT1_LT4_Turbo_Forward_Upward_Facing_1-3_4_Headers_25-1065.png?v=1762205981"},{"product_id":"speed-engineering-2014-gm-lt1-lt2-lt4-exhaust-manifold-gaskets","title":"Speed Engineering Exhaust Manifold Gaskets — 2014+ GM LT1\/LT2\/LT4 Engines | 25-1059","description":"\u003cp\u003eNeed a reliable seal between your cylinder heads and your headers or factory manifolds on a Gen V LT engine? Speed Engineering's MLS (multi-layer steel) exhaust manifold gaskets are engineered for extreme cylinder pressures, maintaining torque set and resisting corrosion without burning through or pushing out. No sealants required. These gaskets work across virtually any combination of cylinder head and exhaust manifold materials, making them compatible with Speed Engineering headers or factory exhaust manifolds. 8.8 metric header bolts are included. Sold in pairs — one for each bank.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Layer Steel (MLS) Construction\u003c\/strong\u003e — Maintains torque set and resists corrosion under extreme cylinder pressures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Sealants Required\u003c\/strong\u003e — Direct installation without additional sealing compounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with Various Head and Manifold Material Combinations\u003c\/strong\u003e — Works with Speed Engineering headers or factory manifolds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResists Burn-Through and Push-Out\u003c\/strong\u003e — Engineered for long-term durability under heat and pressure\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e8.8 Metric Header Bolts Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 QTY per Package\u003c\/strong\u003e — One gasket per bank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e\u003cbr\u003eLT1, LT2, LT4\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Vehicles:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2016+ Chevrolet Camaro\u003c\/li\u003e\n\u003cli\u003e2014–2019 Chevrolet Corvette (C7)\u003c\/li\u003e\n\u003cli\u003e2020+ Chevrolet Corvette (C8)\u003c\/li\u003e\n\u003cli\u003e2015–2020 Cadillac CTS-V\u003c\/li\u003e\n\u003cli\u003e2014+ Chevrolet Tahoe, GMC Yukon, Cadillac Escalade (5.3L \u0026amp; 6.2L only)\u003c\/li\u003e\n\u003cli\u003e2014+ Chevrolet Silverado \u0026amp; GMC Sierra (5.3L, 6.2L only)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eDo I need sealant with these gaskets?\u003c\/h5\u003e\n\u003cp\u003eNo. These MLS gaskets are designed for direct installation without any additional sealants or sealing compounds.\u003c\/p\u003e\n\u003ch5\u003eAre bolts included with these gaskets?\u003c\/h5\u003e\n\u003cp\u003eYes. 8.8 metric header bolts are included.\u003c\/p\u003e\n\u003ch5\u003eWill these gaskets work with my factory exhaust manifolds?\u003c\/h5\u003e\n\u003cp\u003eYes. These gaskets are compatible with various combinations of cylinder head and exhaust manifold materials, working equally well with Speed Engineering headers or factory exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eHow many gaskets are included?\u003c\/h5\u003e\n\u003cp\u003eThis package includes 2 gaskets — one for each bank.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between this gasket and the LS gasket (25-1001)?\u003c\/h5\u003e\n\u003cp\u003eThis gasket is designed for the Gen V LT engine family (LT1, LT2, LT4) found in 2014 and newer GM vehicles. The LS gasket (25-1001) is designed for the Gen 3\/Gen 4 LS engine family. Make sure you select the gasket matching your engine generation.\u003c\/p\u003e\n\u003ch5\u003eWhat vehicles use this gasket?\u003c\/h5\u003e\n\u003cp\u003eThis gasket fits a wide range of LT-powered GM vehicles including the Camaro, C7 and C8 Corvette, CTS-V, Tahoe, Yukon, Escalade, Silverado, and Sierra. See the full applications list for specific model years.\u003c\/p\u003e\n\u003ch5\u003eWhat makes MLS gaskets better than standard gaskets?\u003c\/h5\u003e\n\u003cp\u003eMulti-layer steel construction maintains torque set under extreme cylinder pressures and resists corrosion, without burning through or pushing out over time — common failure points for lower-quality composite gaskets.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Do I need sealant with these gaskets?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These MLS gaskets are designed for direct installation without any additional sealants or sealing compounds.\"}}, {\"@type\": \"Question\", \"name\": \"Are bolts included with these gaskets?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 8.8 metric header bolts are included.\"}}, {\"@type\": \"Question\", \"name\": \"Will these gaskets work with my factory exhaust manifolds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. These gaskets are compatible with various combinations of cylinder head and exhaust manifold materials, working equally well with Speed Engineering headers or factory exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"How many gaskets are included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This package includes 2 gaskets — one for each bank.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between this gasket and the LS gasket (25-1001)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This gasket is designed for the Gen V LT engine family (LT1, LT2, LT4) found in 2014 and newer GM vehicles. The LS gasket (25-1001) is designed for the Gen 3\/Gen 4 LS engine family. Make sure you select the gasket matching your engine generation.\"}}, {\"@type\": \"Question\", \"name\": \"What vehicles use this gasket?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This gasket fits a wide range of LT-powered GM vehicles including the Camaro, C7 and C8 Corvette, CTS-V, Tahoe, Yukon, Escalade, Silverado, and Sierra. See the full applications list for specific model years.\"}}, {\"@type\": \"Question\", \"name\": \"What makes MLS gaskets better than standard gaskets?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Multi-layer steel construction maintains torque set under extreme cylinder pressures and resists corrosion, without burning through or pushing out over time — common failure points for lower-quality composite gaskets.\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41227897077808,"sku":"25-1059","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2014_GM_LT1_LT2_LT4_Exhaust_Manifold_Gaskets_25-1059.png?v=1762206110"},{"product_id":"speed-engineering-gen5-lt-zinc-exhaust-manifold-header-bolts","title":"Speed Engineering Gen 5 LT Zinc Exhaust Manifold Bolts (Header Bolts) | 26-1065","description":"\u003cp\u003eThe right hardware makes all the difference at installation. Speed Engineering's Gen 5 LT zinc exhaust manifold bolts are the correct direct-fit hardware for LT engine header and exhaust manifold installations, sold as a complete set of 10.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM8x1.25 Thread Pitch\u003c\/strong\u003e — Correct fitment for Gen 5 LT engine exhaust manifold and header applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8.8 Grade Zinc Flange Bolts\u003c\/strong\u003e — Corrosion resistant with the clamping strength needed for exhaust applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 Bolts Included\u003c\/strong\u003e — Complete set for a full header installation\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDirect Fit for Gen 5 LT Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGM Gen 5 5.3L LT\u003c\/li\u003e\n\u003cli\u003eGM Gen 5 6.2L LT1\u003c\/li\u003e\n\u003cli\u003eGM Gen 5 6.2L LT4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWhat thread pitch are these header bolts?\u003c\/h5\u003e\n\u003cp\u003eThese bolts are M8x1.25 thread pitch, correct for Gen 5 LT engine exhaust manifold and header applications.\u003c\/p\u003e\n\u003ch5\u003eHow many bolts are included?\u003c\/h5\u003e\n\u003cp\u003e10 bolts are included per set — a complete set for a full header installation.\u003c\/p\u003e\n\u003ch5\u003eWhat grade are these bolts?\u003c\/h5\u003e\n\u003cp\u003eThese are 8.8 grade zinc flange bolts, providing corrosion resistance and the clamping strength required for exhaust applications.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these bolts compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese bolts are compatible with GM Gen 5 LT engines including the 5.3L LT, 6.2L LT1, and 6.2L LT4.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What thread pitch are these header bolts?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These bolts are M8x1.25 thread pitch, correct for Gen 5 LT engine exhaust manifold and header applications.\"}}, {\"@type\": \"Question\", \"name\": \"How many bolts are included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"10 bolts are included per set — a complete set for a full header installation.\"}}, {\"@type\": \"Question\", \"name\": \"What grade are these bolts?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These are 8.8 grade zinc flange bolts, providing corrosion resistance and the clamping strength required for exhaust applications.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these bolts compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These bolts are compatible with GM Gen 5 LT engines including the 5.3L LT, 6.2L LT1, and 6.2L LT4.\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41227901993008,"sku":"26-1065","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/26-1062SpeedEngineeringZincBolts.png?v=1711472300"},{"product_id":"speed-engineering-gen5-lt-arp-12pt-polished-stainless-header-bolts","title":"Speed Engineering Gen V LT ARP 12-Point Stainless Header Bolts \u0026 Washers (Polished) 26-1064","description":"\u003cp\u003eHeaders can represent a sizable investment, so you'll want to keep them securely attached. In addition, exhaust leaks can cost you power and even cause damage to your vehicle. ARP has the answer, in the form of their stainless 12 point header bolts. They're made from premium stainless steel, which is rated at 170,000 psi tensile strength. That's much stronger than Grade 8 steel. These bolts are also highly corrosion and heat-resistant, for long service under the toughest conditions, and they're polished to a mirror-like shine.\u003c\/p\u003e\n\u003cp\u003e-10 Qty Bolts \u0026amp; Washers\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat material are these header bolts made from?\u003c\/h5\u003e\u003cp\u003eThey're made from premium stainless steel rated at 170,000 psi tensile strength, which is much stronger than Grade 8 steel.\u003c\/p\u003e\u003ch5\u003eAre these bolts corrosion and heat resistant?\u003c\/h5\u003e\u003cp\u003eYes, they are highly corrosion and heat-resistant, for long service under the toughest conditions.\u003c\/p\u003e\u003ch5\u003eWhat finish do these bolts have?\u003c\/h5\u003e\u003cp\u003eThey are polished to a mirror-like shine.\u003c\/p\u003e\u003ch5\u003eWhat's included?\u003c\/h5\u003e\u003cp\u003e10 quantity of 12-point stainless header bolts and washers.\u003c\/p\u003e\u003ch5\u003eWhat style head do these bolts use?\u003c\/h5\u003e\u003cp\u003eThese are 12-point stainless header bolts from ARP.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What material are these header bolts made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"They're made from premium stainless steel rated at 170,000 psi tensile strength, which is much stronger than Grade 8 steel.\"}}, {\"@type\": \"Question\", \"name\": \"Are these bolts corrosion and heat resistant?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, they are highly corrosion and heat-resistant, for long service under the toughest conditions.\"}}, {\"@type\": \"Question\", \"name\": \"What finish do these bolts have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"They are polished to a mirror-like shine.\"}}, {\"@type\": \"Question\", \"name\": \"What's included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"10 quantity of 12-point stainless header bolts and washers.\"}}, {\"@type\": \"Question\", \"name\": \"What style head do these bolts use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These are 12-point stainless header bolts from ARP.\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41227905597488,"sku":"26-1064","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_Gen_V_LT_ARP_12-Point_Stainless_Header_Bolts_Washers_Polished_26-1064.png?v=1762206528"},{"product_id":"speed-engineering-2010-2015-camaro-ls3-l99-2-inch-longtube-headers","title":"Speed Engineering 2\" Longtube Headers — 2010–2015 Chevrolet Camaro SS \u0026 ZL1 LS3\/L99 6.2L | 25-1078","description":"\u003cp\u003eThe factory exhaust manifolds on your 5th Gen Camaro SS or ZL1 are one of the first restrictions standing between you and more power. Speed Engineering's 2\" longtube headers are a direct-fit, dyno-proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 25 rear-wheel horsepower over stock.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined port-matched flanges, and full TIG-welded construction — engineered to fit right and built to last.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" Port-Matched Primary Tubes\u003c\/strong\u003e — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on LS3 and L99 applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with LS3, L99, ZL1, and 6.2L Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Band clamps are only included when the off-road connection pipe upgrade is selected.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2010 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eHow much horsepower do these headers add to a 5th Gen Camaro?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's 2\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on LS3 and L99 equipped 2010–2015 Camaro SS and ZL1 applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eDo band clamps come included with these headers?\u003c\/h5\u003e\n\u003cp\u003eBand clamps are only included when the off-road connection pipe upgrade is selected at the time of purchase. They are not included with the headers alone.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese headers are compatible with the LS3, L99, ZL1, and 6.2L engines found in 2010–2015 Chevrolet Camaro SS and ZL1 models.\u003c\/p\u003e\n\u003ch5\u003eWhat size are the primary tubes?\u003c\/h5\u003e\n\u003cp\u003eThese headers feature full 2\" port-matched primary tubes with a 3\" collector — sized for maximum flow on the LS3 and L99 platform.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined port-matched flanges for a precise, durable, leak-free fit.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add to a 5th Gen Camaro?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 2\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on LS3 and L99 equipped 2010–2015 Camaro SS and ZL1 applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"Do band clamps come included with these headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Band clamps are only included when the off-road connection pipe upgrade is selected at the time of purchase. They are not included with the headers alone.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with the LS3, L99, ZL1, and 6.2L engines found in 2010–2015 Chevrolet Camaro SS and ZL1 models.\"}}, {\"@type\": \"Question\", \"name\": \"What size are the primary tubes?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers feature full 2\\\" port-matched primary tubes with a 3\\\" collector — sized for maximum flow on the LS3 and L99 platform.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction and CNC-machined port-matched flanges for a precise, durable, leak-free fit.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228065996848,"sku":"25-1078","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2010_2015_Camaro_2_Longtube_Headers_LS3_L99_Engines_25-1078.png?v=1762206894"},{"product_id":"speed-engineering-2010-2015-camaro-ls3-l99-1-7-8-longtube-headers","title":"Speed Engineering 1-7\/8\" Longtube Headers — 2010–2015 Chevrolet Camaro SS \u0026 ZL1 LS3\/L99 6.2L | 25-1017","description":"\u003cp\u003eThe factory exhaust manifolds on your 5th Gen Camaro SS or ZL1 are one of the first restrictions standing between you and more power. Speed Engineering's 1-7\/8\" longtube headers are a direct-fit, dyno-proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 25 rear-wheel horsepower over stock.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined port-matched flanges, and full TIG-welded construction — engineered to fit right and built to last.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-7\/8\" Port-Matched Primary Tubes\u003c\/strong\u003e — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on LS3 and L99 applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with LS3, L99, ZL1, and 6.2L Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Band clamps are only included when the off-road connection pipe upgrade is selected.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2010 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eHow much horsepower do these headers add to a 5th Gen Camaro?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's 1-7\/8\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on LS3 and L99 equipped 2010–2015 Camaro SS and ZL1 applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between the 1-7\/8\" and 2\" longtube headers for the 5th Gen Camaro?\u003c\/h5\u003e\n\u003cp\u003eThe primary tube diameter is the key difference. The 1-7\/8\" headers are the more traditional size and work well across a broad RPM range, while the 2\" headers are better suited for higher RPM builds with more aggressive modifications. For most street and mild performance builds the 1-7\/8\" tubes are the more common choice.\u003c\/p\u003e\n\u003ch5\u003eDo band clamps come included with these headers?\u003c\/h5\u003e\n\u003cp\u003eBand clamps are only included when the off-road connection pipe upgrade is selected at the time of purchase. They are not included with the headers alone.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese headers are compatible with the LS3, L99, ZL1, and 6.2L engines found in 2010–2015 Chevrolet Camaro SS and ZL1 models.\u003c\/p\u003e\n\u003ch5\u003eWhat size are the primary tubes?\u003c\/h5\u003e\n\u003cp\u003eThese headers feature full 1-7\/8\" port-matched primary tubes with a 3\" collector.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined port-matched flanges for a precise, durable, leak-free fit.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add to a 5th Gen Camaro?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-7\/8\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on LS3 and L99 equipped 2010–2015 Camaro SS and ZL1 applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between the 1-7\/8\\\" and 2\\\" longtube headers for the 5th Gen Camaro?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The primary tube diameter is the key difference. The 1-7\/8\\\" headers are the more traditional size and work well across a broad RPM range, while the 2\\\" headers are better suited for higher RPM builds with more aggressive modifications. For most street and mild performance builds the 1-7\/8\\\" tubes are the more common choice.\"}}, {\"@type\": \"Question\", \"name\": \"Do band clamps come included with these headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Band clamps are only included when the off-road connection pipe upgrade is selected at the time of purchase. 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Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228066488368,"sku":"25-1017","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2010_2015_Camaro_1-7_8_Longtube_Headers_LS3_L99_Engines_25-1017.png?v=1762206995"},{"product_id":"speed-engineering-2010-2015-camaro-true-dual-exhaust-ls3-l99-ss-1le-zl1","title":"Speed Engineering True Dual Exhaust — 2010–2015 Chevrolet Camaro | LS3\/L99 6.2L | SS, 1LE | 25-1022","description":"\u003cp\u003eLooking for a complete axle-back exhaust system for your 5th Gen Camaro that works whether you're running stock manifolds or Speed Engineering longtube headers? This true dual exhaust system is built from 3\" mandrel bent 304 natural stainless steel with insulated bullet style blow-through mufflers and a true dual X-pipe crossover. Choose between single or dual 4\" rear exit tips, both included. 3\" stainless band clamps are included, and an optional wideband O₂ bung is available for tuning applications.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Note:\u003c\/strong\u003e Convertible applications will require removal of, or spacers for, factory braces.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent 3\" Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks with Stock Manifolds\/Cats\u003c\/strong\u003e — Compatible with factory exhaust manifolds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks with Speed Engineering Longtube Headers\u003c\/strong\u003e — Also compatible for maximum flow builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Dual X-Pipe System\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulated Bullet Style Blow-Through Mufflers\u003c\/strong\u003e — Deep, aggressive exhaust tone with straight-through flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle \u0026amp; Dual Rear Exit Tip Options Included\u003c\/strong\u003e — Choose your preferred look\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Stainless Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wideband O₂ Bung\u003c\/strong\u003e — Available for wideband sensor placement for tuning applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSingle \u0026amp; Dual 4\" Exhaust Tips\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6.2L LS3 and L99 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro SS — LS3\/L99 6.2L (5th Gen)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2010 Chevrolet Camaro SS (RWD) — 6.2L LS3\/L99\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Camaro SS (RWD) — 6.2L LS3\/L99\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Camaro SS (RWD) — 6.2L LS3\/L99\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Camaro SS (RWD) — 6.2L LS3\/L99\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Camaro SS (RWD) — 6.2L LS3\/L99\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Camaro SS (RWD) — 6.2L LS3\/L99\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro 1LE — LS3 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2013 Chevrolet Camaro 1LE (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Camaro 1LE (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Camaro 1LE (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eIs this exhaust compatible with my ZL1?\u003c\/h5\u003e\n\u003cp\u003eThis listing's engine compatibility is specified as LS3\/L99 6.2L. The Camaro ZL1 (2012–2015) uses the supercharged LSA engine rather than LS3\/L99. If you have a ZL1, please contact Speed Engineering to confirm fitment before ordering, as the rear chassis and exhaust routing may differ from the SS and 1LE.\u003c\/p\u003e\n\u003ch5\u003eDoes this work with my stock exhaust manifolds?\u003c\/h5\u003e\n\u003cp\u003eYes. This system is compatible with stock manifolds and catalytic converters, as well as Speed Engineering longtube headers, making it a flexible choice regardless of your front-end setup.\u003c\/p\u003e\n\u003ch5\u003eDo I have to choose between single and dual exit tips?\u003c\/h5\u003e\n\u003cp\u003eNo. Both single and dual 4\" rear exit tip configurations are included with this system, giving you the flexibility to choose your preferred look at installation.\u003c\/p\u003e\n\u003ch5\u003eWill this fit my convertible Camaro?\u003c\/h5\u003e\n\u003cp\u003eYes, with a modification. Convertible applications will require removal of, or spacers for, factory braces to accommodate this exhaust system.\u003c\/p\u003e\n\u003ch5\u003eWhat mufflers does this system use?\u003c\/h5\u003e\n\u003cp\u003eInsulated bullet style blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\u003c\/p\u003e\n\u003ch5\u003eIs a wideband O₂ bung included?\u003c\/h5\u003e\n\u003cp\u003eAn optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\u003c\/p\u003e\n\u003ch5\u003eWhat material is this system made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\" stainless band clamps are included.\u003c\/p\u003e\n\u003ch5\u003eIs this system street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this exhaust compatible with my ZL1?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This listing's engine compatibility is specified as LS3\/L99 6.2L. The Camaro ZL1 (2012–2015) uses the supercharged LSA engine rather than LS3\/L99. If you have a ZL1, please contact Speed Engineering to confirm fitment before ordering, as the rear chassis and exhaust routing may differ from the SS and 1LE.\"}}, {\"@type\": \"Question\", \"name\": \"Does this work with my stock exhaust manifolds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This system is compatible with stock manifolds and catalytic converters, as well as Speed Engineering longtube headers, making it a flexible choice regardless of your front-end setup.\"}}, {\"@type\": \"Question\", \"name\": \"Do I have to choose between single and dual exit tips?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. Both single and dual 4\\\" rear exit tip configurations are included with this system, giving you the flexibility to choose your preferred look at installation.\"}}, {\"@type\": \"Question\", \"name\": \"Will this fit my convertible Camaro?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, with a modification. Convertible applications will require removal of, or spacers for, factory braces to accommodate this exhaust system.\"}}, {\"@type\": \"Question\", \"name\": \"What mufflers does this system use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Insulated bullet style blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\"}}, {\"@type\": \"Question\", \"name\": \"Is a wideband O₂ bung included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"An optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\"}}, {\"@type\": \"Question\", \"name\": \"What material is this system made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\\\" stainless band clamps are included.\"}}, {\"@type\": \"Question\", \"name\": \"Is this system street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41227992399920,"sku":"25-1022","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2010_2015_Camaro_True_Dual_Exhaust_LS3_L99_SS_1LE_ZL1_25-1022.png?v=1762286075"},{"product_id":"speed-engineering-2010-2015-camaro-off-road-connection-pipes","title":"Speed Engineering Off-Road Connection Pipes — 2010–2015 Chevrolet Camaro SS \u0026 ZL1 | 25-1024","description":"\u003cp\u003eIf you're running Speed Engineering longtube headers on your 5th Gen Camaro, these off-road connection pipes are the missing link. Designed specifically to connect Speed Engineering longtube headers to the factory cat-back exhaust system on 2010–2015 Camaro SS and ZL1 models, this is a straightforward, direct-fit solution built from 304 stainless steel.\u003c\/p\u003e\n\u003cp\u003eAll four band clamps are included.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Fit for Speed Engineering Longtube Headers\u003c\/strong\u003e — Designed specifically to connect Speed Engineering headers to the factory cat-back exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll Four Band Clamps Included\u003c\/strong\u003e — Everything needed for installation is in the box\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 2010–2015 Camaro SS \u0026amp; ZL1 LS3\/L99 6.2L\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2010 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Camaro SS \u0026amp; ZL1 — LS3\/L99 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWhat do these connection pipes connect to?\u003c\/h5\u003e\n\u003cp\u003eThese off-road connection pipes are designed specifically to connect Speed Engineering longtube headers to the factory cat-back exhaust system on 2010–2015 Chevrolet Camaro SS and ZL1 models.\u003c\/p\u003e\n\u003ch5\u003eAre clamps included?\u003c\/h5\u003e\n\u003cp\u003eYes. All four band clamps needed for installation are included in the box.\u003c\/p\u003e\n\u003ch5\u003eDo I need these connection pipes if I already have Speed Engineering longtube headers?\u003c\/h5\u003e\n\u003cp\u003eYes, if you are connecting your Speed Engineering longtube headers to the factory cat-back exhaust. These pipes are the direct-fit connection piece designed for that application.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these connection pipes made from?\u003c\/h5\u003e\n\u003cp\u003e304 stainless steel for corrosion resistance and long-term durability.\u003c\/p\u003e\n\u003ch5\u003eAre these connection pipes street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only parts intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What do these connection pipes connect to?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These off-road connection pipes are designed specifically to connect Speed Engineering longtube headers to the factory cat-back exhaust system on 2010–2015 Chevrolet Camaro SS and ZL1 models.\"}}, {\"@type\": \"Question\", \"name\": \"Are clamps included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. All four band clamps needed for installation are included in the box.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need these connection pipes if I already have Speed Engineering longtube headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, if you are connecting your Speed Engineering longtube headers to the factory cat-back exhaust. These pipes are the direct-fit connection piece designed for that application.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these connection pipes made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 stainless steel for corrosion resistance and long-term durability.\"}}, {\"@type\": \"Question\", \"name\": \"Are these connection pipes street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only parts intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41227999412272,"sku":"25-1024","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2010_2015_Camaro_Off-Road_Connection_Pipes_25-1024.png?v=1762207111"},{"product_id":"speed-engineering-universal-ls-forward-facing-turbo-1-3-4-headers","title":"Speed Engineering Universal LS Forward Facing Turbo 1-3\/4\" Headers | 25-1023","description":"\u003cp\u003eBuilding a custom turbo setup on an LS engine? Speed Engineering's forward facing turbo headers give you a solid, well-built foundation to work from. Constructed from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, and full TIG-welded construction, these headers are designed for custom turbo builds where a universal fit is needed rather than a vehicle-specific application.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e These are completely universal headers and are not designed for any specific vehicle application.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-3\/4\" Primary Tubes\u003c\/strong\u003e — Sized for turbo applications across the LS engine family\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Short Collector Design\u003c\/strong\u003e — Forward facing orientation for turbocharger placement flexibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter throughout; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the cylinder head for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGM LS 4.8L\u003c\/li\u003e\n\u003cli\u003eGM LS 5.3L\u003c\/li\u003e\n\u003cli\u003eGM LS 6.0L\u003c\/li\u003e\n\u003cli\u003eGM LS1 6.2L\u003c\/li\u003e\n\u003cli\u003eGM LS2 6.0L\u003c\/li\u003e\n\u003cli\u003eGM LS3 6.2L\u003c\/li\u003e\n\u003cli\u003eGM LS6 5.7L\u003c\/li\u003e\n\u003cli\u003eGM LSA 6.2L Supercharged\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWhat vehicles do these headers fit?\u003c\/h5\u003e\n\u003cp\u003eThese are completely universal headers and are not designed for any specific vehicle application. They are intended for custom turbo builds using GM LS family engines including 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA applications.\u003c\/p\u003e\n\u003ch5\u003eWhat direction do the collectors face?\u003c\/h5\u003e\n\u003cp\u003eThe collectors face forward, making these headers suited for custom turbo builds where turbocharger placement requires a forward facing orientation.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\n\u003cp\u003eCompatible with GM LS V8 engines including 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA.\u003c\/p\u003e\n\u003ch5\u003eWhat size are the primary tubes and collector?\u003c\/h5\u003e\n\u003cp\u003eThe primary tubes are 1-3\/4\" with a 3\" short collector design.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\n\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\n\u003cp\u003eYes. Standard graphite manifold gaskets are included with the headers.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What vehicles do these headers fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These are completely universal headers and are not designed for any specific vehicle application. They are intended for custom turbo builds using GM LS family engines including 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA applications.\"}}, {\"@type\": \"Question\", \"name\": \"What direction do the collectors face?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The collectors face forward, making these headers suited for custom turbo builds where turbocharger placement requires a forward facing orientation.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Compatible with GM LS V8 engines including 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA.\"}}, {\"@type\": \"Question\", \"name\": \"What size are the primary tubes and collector?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The primary tubes are 1-3\/4\\\" with a 3\\\" short collector design.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\"}}, {\"@type\": \"Question\", \"name\": \"Are gaskets included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Standard graphite manifold gaskets are included with the headers.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228014125104,"sku":"25-1023","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_Universal_LS_Forward-Facing_Turbo_1-3_4_Headers_LS1_LS2_LS3_LS6_LSA_25-1023.png?v=1762207294"},{"product_id":"speed-engineering-ls-exhaust-manifold-gaskets-gm-ls1-ls6","title":"Speed Engineering LS Exhaust Manifold Gaskets — GM LS1\/LS2\/LS3\/LS6\/LS7\/LS9\/LSX Engines | 25-1001","description":"\u003cp\u003eNeed a reliable seal between your cylinder heads and your headers or factory manifolds? Speed Engineering's MLS (multi-layer steel) exhaust manifold gaskets are engineered for extreme cylinder pressures, maintaining torque set and resisting corrosion without burning through or pushing out. No sealants required. These gaskets work across virtually any combination of cylinder head and exhaust manifold materials, making them compatible with Speed Engineering headers or factory exhaust manifolds. Sold in pairs — one for each bank.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Layer Steel (MLS) Construction\u003c\/strong\u003e — Maintains torque set and resists corrosion under extreme cylinder pressures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Sealants Required\u003c\/strong\u003e — Direct installation without additional sealing compounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with Various Head and Manifold Material Combinations\u003c\/strong\u003e — Works with Speed Engineering headers or factory manifolds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResists Burn-Through and Push-Out\u003c\/strong\u003e — Engineered for long-term durability under heat and pressure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 QTY per Package\u003c\/strong\u003e — One gasket per bank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e\u003cbr\u003eLS1, LS2, LS3, LS6, LS7, LS9, LSX\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Vehicles:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999–2002 Chevrolet Camaro \u0026amp; Pontiac Firebird\u003c\/li\u003e\n\u003cli\u003e2010–2013 Chevrolet Camaro\u003c\/li\u003e\n\u003cli\u003e1999–2013 Chevrolet Corvette\u003c\/li\u003e\n\u003cli\u003e2004–2006 Pontiac GTO\u003c\/li\u003e\n\u003cli\u003e2004–2015 Cadillac CTS-V\u003c\/li\u003e\n\u003cli\u003e2008–2009 Pontiac G8\u003c\/li\u003e\n\u003cli\u003e2000–2013 Chevrolet Tahoe, GMC Yukon, Cadillac Escalade\u003c\/li\u003e\n\u003cli\u003e2003–2009 Hummer H2\u003c\/li\u003e\n\u003cli\u003e2001–2013 Chevrolet Avalanche\u003c\/li\u003e\n\u003cli\u003e1999–2013 Chevrolet Silverado \u0026amp; GMC Sierra (4.8L, 5.3L, 6.0L, 6.2L)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eDo I need sealant with these gaskets?\u003c\/h5\u003e\n\u003cp\u003eNo. These MLS gaskets are designed for direct installation without any additional sealants or sealing compounds.\u003c\/p\u003e\n\u003ch5\u003eWill these gaskets work with my factory exhaust manifolds?\u003c\/h5\u003e\n\u003cp\u003eYes. These gaskets are compatible with various combinations of cylinder head and exhaust manifold materials, working equally well with Speed Engineering headers or factory exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eHow many gaskets are included?\u003c\/h5\u003e\n\u003cp\u003eThis package includes 2 gaskets — one for each bank.\u003c\/p\u003e\n\u003ch5\u003eWhat LS engines are these gaskets compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese gaskets are compatible with the full LS engine family including LS1, LS2, LS3, LS6, LS7, LS9, and LSX.\u003c\/p\u003e\n\u003ch5\u003eWhat vehicles use this gasket?\u003c\/h5\u003e\n\u003cp\u003eThis gasket fits a wide range of LS-powered GM vehicles including the Camaro, Firebird, Corvette, GTO, CTS-V, G8, Tahoe, Yukon, Escalade, Hummer H2, Avalanche, Silverado, and Sierra. See the full applications list for specific model years.\u003c\/p\u003e\n\u003ch5\u003eWhat makes MLS gaskets better than standard gaskets?\u003c\/h5\u003e\n\u003cp\u003eMulti-layer steel construction maintains torque set under extreme cylinder pressures and resists corrosion, without burning through or pushing out over time — common failure points for lower-quality composite gaskets.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Do I need sealant with these gaskets?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These MLS gaskets are designed for direct installation without any additional sealants or sealing compounds.\"}}, {\"@type\": \"Question\", \"name\": \"Will these gaskets work with my factory exhaust manifolds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. These gaskets are compatible with various combinations of cylinder head and exhaust manifold materials, working equally well with Speed Engineering headers or factory exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"How many gaskets are included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This package includes 2 gaskets — one for each bank.\"}}, {\"@type\": \"Question\", \"name\": \"What LS engines are these gaskets compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These gaskets are compatible with the full LS engine family including LS1, LS2, LS3, LS6, LS7, LS9, and LSX.\"}}, {\"@type\": \"Question\", \"name\": \"What vehicles use this gasket?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This gasket fits a wide range of LS-powered GM vehicles including the Camaro, Firebird, Corvette, GTO, CTS-V, G8, Tahoe, Yukon, Escalade, Hummer H2, Avalanche, Silverado, and Sierra. See the full applications list for specific model years.\"}}, {\"@type\": \"Question\", \"name\": \"What makes MLS gaskets better than standard gaskets?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Multi-layer steel construction maintains torque set under extreme cylinder pressures and resists corrosion, without burning through or pushing out over time — common failure points for lower-quality composite gaskets.\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228030476336,"sku":"25-1001","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_LS_Exhaust_Manifold_Gaskets_GM_LS1_LS2_LS3_LS6_25-1001.png?v=1762207570"},{"product_id":"speed-engineering-1998-2002-camaro-firebird-ls1-1-7-8-longtube-headers","title":"Speed Engineering 1-7\/8\" Longtube Headers — 1998–2002 Chevrolet Camaro \u0026 Pontiac Firebird\/Trans Am | LS1 5.7L | 25-1020","description":"\u003cp\u003eThe factory exhaust manifolds on your 4th Gen Camaro or Firebird are one of the first restrictions holding back your LS1. Speed Engineering's 1-7\/8\" longtube headers are a direct-fit, dyno-proven upgrade — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel with merge spikes and full port-matched construction. Delivers over 25 rear-wheel horsepower over stock manifolds.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e These headers also work on 1993–1997 Camaro and Firebird applications equipped with an LS swap conversion.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-7\/8\" Primary Tubes with Merge Spikes\u003c\/strong\u003e — Maximum flow from cylinder head to collector for aggressive LS1 performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on LS1 applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 5.7L LS1 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro — LS1 5.7L (4th Gen F-Body)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1998 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Firebird \u0026amp; Trans Am — LS1 5.7L (4th Gen F-Body)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1998 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Also fits 1993–1997 Camaro and Firebird applications with an LS swap conversion.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWhat is the difference between these headers and the 1-3\/4\" full kit (25-1010)?\u003c\/h5\u003e\n\u003cp\u003eTwo differences: these are headers only — no Y-pipe or additional kit components are included — and the primary tube diameter is 1-7\/8\" vs 1-3\/4\". The 1-7\/8\" headers offer a step up in flow for more aggressive builds with supporting modifications. Choose the full kit for an all-in-one purchase or these headers if you already have an exhaust system in place.\u003c\/p\u003e\n\u003ch5\u003eWill these headers work on a 1993–1997 3rd Gen Camaro or Firebird?\u003c\/h5\u003e\n\u003cp\u003eYes, with an LS swap conversion. These headers are confirmed to work on 1993–1997 Camaro and Firebird applications equipped with an LS engine swap.\u003c\/p\u003e\n\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's 1-7\/8\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 1998–2002 Camaro and Firebird LS1 applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between these headers and the 1-3\/4\\\" full kit (25-1010)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Two differences: these are headers only — no Y-pipe or additional kit components are included — and the primary tube diameter is 1-7\/8\\\" vs 1-3\/4\\\". The 1-7\/8\\\" headers offer a step up in flow for more aggressive builds with supporting modifications. Choose the full kit for an all-in-one purchase or these headers if you already have an exhaust system in place.\"}}, {\"@type\": \"Question\", \"name\": \"Will these headers work on a 1993–1997 3rd Gen Camaro or Firebird?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, with an LS swap conversion. These headers are confirmed to work on 1993–1997 Camaro and Firebird applications equipped with an LS engine swap.\"}}, {\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-7\/8\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 1998–2002 Camaro and Firebird LS1 applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228085755952,"sku":"25-1020","price":309.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1998_2002_Camaro_Firebird_1-7_8_Longtube_Headers_LS1_Engines_25-1020.png?v=1762205406"},{"product_id":"speed-engineering-1998-2002-camaro-firebird-1-3-4-longtube-headers-5-7l-ls1","title":"Speed Engineering 1-3\/4\" Longtube Headers — 1998–2002 Chevrolet Camaro \u0026 Pontiac Firebird\/Trans Am 5.7L LS1 | 25-1010","description":"\u003cp\u003eThe factory exhaust manifolds on your 4th Gen Camaro or Firebird are leaving power on the table. Speed Engineering's 1-3\/4\" longtube headers are a direct-fit, dyno-proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 25 rear-wheel horsepower over stock.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, merge spikes, and full TIG-welded construction.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-3\/4\" Primary Tubes with Merge Spikes\u003c\/strong\u003e — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on 5.7L LS1 applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 5.7L LS1 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro — SS \u0026amp; Z28 (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1998 Chevrolet Camaro SS\/Z28 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Chevrolet Camaro SS\/Z28 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Camaro SS\/Z28 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Camaro SS\/Z28 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Camaro SS\/Z28 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Firebird — Formula \u0026amp; Trans Am (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1998 Pontiac Firebird Formula\/Trans Am (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Pontiac Firebird Formula\/Trans Am (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Pontiac Firebird Formula\/Trans Am (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Pontiac Firebird Formula\/Trans Am (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Pontiac Firebird Formula\/Trans Am (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e These headers will also work on 1993–1997 Camaro and Firebird applications with an LS swap conversion.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eHow much horsepower do these headers add to a 4th Gen Camaro or Firebird?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's 1-3\/4\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 5.7L LS1 equipped 1998–2002 Camaro and Firebird\/Trans Am applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between the 1-3\/4\" and 1-7\/8\" headers for the 4th Gen Camaro and Firebird?\u003c\/h5\u003e\n\u003cp\u003eThe primary tube diameter is the key difference. The 1-3\/4\" headers work well across a broad RPM range and are a strong choice for most street and mild performance builds. The 1-7\/8\" headers offer a step up in flow and are better suited for more aggressive builds with supporting modifications where maximum exhaust scavenging is the priority.\u003c\/p\u003e\n\u003ch5\u003eWill these headers work on a 1993–1997 Camaro or Firebird?\u003c\/h5\u003e\n\u003cp\u003eYes, with an LS swap conversion. These headers are designed for the 1998–2002 platform but are compatible with 1993–1997 Camaro and Firebird applications that have been converted to an LS engine.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese headers are compatible with the 5.7L LS1 engine found in 1998–2002 Chevrolet Camaro SS\/Z28 and Pontiac Firebird Formula\/Trans Am models.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add to a 4th Gen Camaro or Firebird?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-3\/4\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 5.7L LS1 equipped 1998–2002 Camaro and Firebird\/Trans Am applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between the 1-3\/4\\\" and 1-7\/8\\\" headers for the 4th Gen Camaro and Firebird?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The primary tube diameter is the key difference. The 1-3\/4\\\" headers work well across a broad RPM range and are a strong choice for most street and mild performance builds. The 1-7\/8\\\" headers offer a step up in flow and are better suited for more aggressive builds with supporting modifications where maximum exhaust scavenging is the priority.\"}}, {\"@type\": \"Question\", \"name\": \"Will these headers work on a 1993–1997 Camaro or Firebird?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, with an LS swap conversion. These headers are designed for the 1998–2002 platform but are compatible with 1993–1997 Camaro and Firebird applications that have been converted to an LS engine.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with the 5.7L LS1 engine found in 1998–2002 Chevrolet Camaro SS\/Z28 and Pontiac Firebird Formula\/Trans Am models.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228088279088,"sku":"25-1010","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1998_2002_Camaro_Firebird_1-3_4_Longtube_Headers_5.7L_LS1_25-1010.png?v=1762286201"},{"product_id":"speed-engineering-1998-2002-camaro-firebird-ls1-true-dual-exhaust-rear-exit","title":"Speed Engineering True Dual Exhaust — 1998–2002 Chevrolet Camaro \u0026 Pontiac Firebird\/Trans Am LS1 Rear Exit | 25-1031","description":"\u003cp\u003eReady to give your 4th Gen Camaro or Firebird a proper true dual rear exit exhaust? Speed Engineering's system is built from 3\" mandrel bent 304 natural stainless steel with a true dual X-pipe design, insulated bullet style blow-through mufflers, and dual 4\" exhaust tips — all designed specifically for the LS1 F-body. Don't be fooled by cheaper competitor knockoffs. Most have fitment issues and a dropped center section that kills ground clearance. Speed Engineering's system features a raised center section with a custom hanger designed to keep it as high as possible. Dyno proven.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Installation Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA Suspension Engineering Panhard Rod Relocation Kit is required\u003c\/strong\u003e for this system to clear over the rear axle. Available in Black or Red — select your color at checkout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned to work with Speed Engineering 1-3\/4\" and 1-7\/8\" F-body longtube headers only\u003c\/strong\u003e — not compatible with factory exhaust manifolds. Also fits eBay, OBX, and PaceSetter style longtube headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1982–1992 F-body LS swap applications\u003c\/strong\u003e — this system can also be used with modification at the collectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLowered vehicles may require modification\u003c\/strong\u003e for proper ground clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Dual X-Pipe Design\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaised Center Section with Custom Hanger\u003c\/strong\u003e — Engineered for maximum ground clearance — a key advantage over competitor systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulated Bullet Style Blow-Through Mufflers\u003c\/strong\u003e — Deep, aggressive exhaust tone with straight-through flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wideband O₂ Bungs\u003c\/strong\u003e — Available for wideband O₂ sensor placement for tuning applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDual 4\" Exhaust Tips Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Stainless Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 5.7L LS1 and LS6 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro — LS1 5.7L (4th Gen F-Body)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1998 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Firebird \u0026amp; Trans Am — LS1 5.7L (4th Gen F-Body)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1998 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Also fits 1982–1992 Camaro and Firebird LS swap applications with modification at the collectors.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eDo I need the Suspension Engineering Panhard Rod Relocation Kit?\u003c\/h5\u003e\n\u003cp\u003eYes. This exhaust system requires a Suspension Engineering Panhard Rod Relocation Kit to clear over the rear axle. It is available in Black or Red — select your color at checkout when adding this system.\u003c\/p\u003e\n\u003ch5\u003eWhat headers does this system work with?\u003c\/h5\u003e\n\u003cp\u003eThis system is designed to work with Speed Engineering 1-3\/4\" and 1-7\/8\" F-body longtube headers. It is not compatible with factory exhaust manifolds. It has also been known to fit eBay, OBX, and PaceSetter style longtube headers.\u003c\/p\u003e\n\u003ch5\u003eWhy is Speed Engineering's system better than cheaper competitors?\u003c\/h5\u003e\n\u003cp\u003eMost competitor systems have fitment issues and a dropped center section that reduces ground clearance. Speed Engineering's system features a raised center section with a custom hanger designed to hold it as high as possible for maximum clearance.\u003c\/p\u003e\n\u003ch5\u003eWill this system work on a 1982–1992 F-body with an LS swap?\u003c\/h5\u003e\n\u003cp\u003eYes, with modification at the collectors. This system has been used on 1982–1992 Camaro and Firebird LS swap applications with collector modifications.\u003c\/p\u003e\n\u003ch5\u003eWill this system work on a lowered vehicle?\u003c\/h5\u003e\n\u003cp\u003eLowered vehicles may require additional modification for proper ground clearance.\u003c\/p\u003e\n\u003ch5\u003eWhat mufflers does this system use?\u003c\/h5\u003e\n\u003cp\u003eInsulated bullet style blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\u003c\/p\u003e\n\u003ch5\u003eAre wideband O₂ bungs included?\u003c\/h5\u003e\n\u003cp\u003eOptional wideband O₂ bungs are available for wideband sensor placement for tuning applications.\u003c\/p\u003e\n\u003ch5\u003eWhat material is this exhaust system made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. Dual 4\" exhaust tips and 3\" stainless band clamps are included.\u003c\/p\u003e\n\u003ch5\u003eIs this exhaust system street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Do I need the Suspension Engineering Panhard Rod Relocation Kit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This exhaust system requires a Suspension Engineering Panhard Rod Relocation Kit to clear over the rear axle. It is available in Black or Red — select your color at checkout when adding this system.\"}}, {\"@type\": \"Question\", \"name\": \"What headers does this system work with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This system is designed to work with Speed Engineering 1-3\/4\\\" and 1-7\/8\\\" F-body longtube headers. It is not compatible with factory exhaust manifolds. It has also been known to fit eBay, OBX, and PaceSetter style longtube headers.\"}}, {\"@type\": \"Question\", \"name\": \"Why is Speed Engineering's system better than cheaper competitors?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Most competitor systems have fitment issues and a dropped center section that reduces ground clearance. Speed Engineering's system features a raised center section with a custom hanger designed to hold it as high as possible for maximum clearance.\"}}, {\"@type\": \"Question\", \"name\": \"Will this system work on a 1982–1992 F-body with an LS swap?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, with modification at the collectors. This system has been used on 1982–1992 Camaro and Firebird LS swap applications with collector modifications.\"}}, {\"@type\": \"Question\", \"name\": \"Will this system work on a lowered vehicle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Lowered vehicles may require additional modification for proper ground clearance.\"}}, {\"@type\": \"Question\", \"name\": \"What mufflers does this system use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Insulated bullet style blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\"}}, {\"@type\": \"Question\", \"name\": \"Are wideband O₂ bungs included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Optional wideband O₂ bungs are available for wideband sensor placement for tuning applications.\"}}, {\"@type\": \"Question\", \"name\": \"What material is this exhaust system made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. Dual 4\\\" exhaust tips and 3\\\" stainless band clamps are included.\"}}, {\"@type\": \"Question\", \"name\": \"Is this exhaust system street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3)\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"None","offer_id":41228038504496,"sku":"25-1031","price":499.99,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":41228037816368,"sku":"25-1031B","price":604.98,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":41228037849136,"sku":"25-1031R","price":604.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1998_2002_Camaro_Firebird_LS1_True_Dual_Exhaust_Rear_Exit_25-1031.png?v=1762207766"},{"product_id":"speed-engineering-1998-2002-camaro-firebird-ls1-true-dual-exhaust-axle-exit","title":"Speed Engineering True Dual Exhaust — 1998–2002 Chevrolet Camaro \u0026 Pontiac Firebird\/Trans Am LS1 Axle Exit | 25-1030 ETA 10\/30\/26","description":"\u003cp\u003eA clean, tucked axle exit alternative to the rear exit system for your 4th Gen Camaro or Firebird. Speed Engineering's axle exit true dual exhaust is built from 3\" mandrel bent 304 natural stainless steel with a true dual X-pipe design and insulated bullet style blow-through mufflers — exiting just at the axle for a cleaner, more tucked profile than the rear exit setup. No Panhard rod relocation kit required. Dyno proven.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Installation Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned to work with Speed Engineering 1-3\/4\" and 1-7\/8\" F-body longtube headers only\u003c\/strong\u003e — not compatible with factory exhaust manifolds. Also fits eBay, OBX, and PaceSetter style longtube headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHangers are designed to be welded or bolted to the floorboard\u003c\/strong\u003e — bolts are not included\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWill NOT work with Suspension Engineering adjustable torque arm\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLowered vehicles may require modification\u003c\/strong\u003e for proper ground clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Dual X-Pipe Design\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle Exit Design\u003c\/strong\u003e — Clean, tucked exit at the rear axle — no Panhard rod relocation required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulated Bullet Style Blow-Through Mufflers\u003c\/strong\u003e — Deep, aggressive exhaust tone with straight-through flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wideband O₂ Bungs\u003c\/strong\u003e — Available for wideband O₂ sensor placement for tuning applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Stainless Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 5.7L LS1 and LS6 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro — LS1 5.7L (4th Gen F-Body)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1998 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Firebird \u0026amp; Trans Am — LS1 5.7L (4th Gen F-Body)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1998 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWhat is the difference between this system and the rear exit version (25-1031)?\u003c\/h5\u003e\n\u003cp\u003eThe key difference is exhaust exit location and installation requirements. The axle exit system (25-1030) exits at the rear axle for a cleaner, more tucked profile — and does not require the Suspension Engineering Panhard rod relocation kit. The rear exit system (25-1031) exits further back behind the bumper with dual 4\" tips for a more aggressive look but requires the Panhard rod relocation kit for axle clearance.\u003c\/p\u003e\n\u003ch5\u003eDoes this system require a Panhard rod relocation kit?\u003c\/h5\u003e\n\u003cp\u003eNo. Unlike the rear exit system, this axle exit setup does not require a Panhard rod relocation kit.\u003c\/p\u003e\n\u003ch5\u003eWill this system work with a Suspension Engineering adjustable torque arm?\u003c\/h5\u003e\n\u003cp\u003eNo. This exhaust system is not compatible with the Suspension Engineering adjustable torque arm.\u003c\/p\u003e\n\u003ch5\u003eHow are the hangers attached?\u003c\/h5\u003e\n\u003cp\u003eThe hangers are designed to be welded or bolted to the floorboard. Bolts are not included.\u003c\/p\u003e\n\u003ch5\u003eWhat headers does this system work with?\u003c\/h5\u003e\n\u003cp\u003eThis system is designed to work with Speed Engineering 1-3\/4\" and 1-7\/8\" F-body longtube headers. It is not compatible with factory exhaust manifolds. It has also been known to fit eBay, OBX, and PaceSetter style longtube headers.\u003c\/p\u003e\n\u003ch5\u003eAre wideband O₂ bungs included?\u003c\/h5\u003e\n\u003cp\u003eOptional wideband O₂ bungs are available for wideband sensor placement for tuning applications.\u003c\/p\u003e\n\u003ch5\u003eWill this system work on a lowered vehicle?\u003c\/h5\u003e\n\u003cp\u003eLowered vehicles may require additional modification for proper ground clearance.\u003c\/p\u003e\n\u003ch5\u003eWhat material is this exhaust system made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\" stainless band clamps are included.\u003c\/p\u003e\n\u003ch5\u003eIs this exhaust system street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between this system and the rear exit version (25-1031)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The key difference is exhaust exit location and installation requirements. The axle exit system (25-1030) exits at the rear axle for a cleaner, more tucked profile — and does not require the Suspension Engineering Panhard rod relocation kit. The rear exit system (25-1031) exits further back behind the bumper with dual 4\\\" tips for a more aggressive look but requires the Panhard rod relocation kit for axle clearance.\"}}, {\"@type\": \"Question\", \"name\": \"Does this system require a Panhard rod relocation kit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. Unlike the rear exit system, this axle exit setup does not require a Panhard rod relocation kit.\"}}, {\"@type\": \"Question\", \"name\": \"Will this system work with a Suspension Engineering adjustable torque arm?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This exhaust system is not compatible with the Suspension Engineering adjustable torque arm.\"}}, {\"@type\": \"Question\", \"name\": \"How are the hangers attached?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The hangers are designed to be welded or bolted to the floorboard. Bolts are not included.\"}}, {\"@type\": \"Question\", \"name\": \"What headers does this system work with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This system is designed to work with Speed Engineering 1-3\/4\\\" and 1-7\/8\\\" F-body longtube headers. It is not compatible with factory exhaust manifolds. It has also been known to fit eBay, OBX, and PaceSetter style longtube headers.\"}}, {\"@type\": \"Question\", \"name\": \"Are wideband O₂ bungs included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Optional wideband O₂ bungs are available for wideband sensor placement for tuning applications.\"}}, {\"@type\": \"Question\", \"name\": \"Will this system work on a lowered vehicle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Lowered vehicles may require additional modification for proper ground clearance.\"}}, {\"@type\": \"Question\", \"name\": \"What material is this exhaust system made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\\\" stainless band clamps are included.\"}}, {\"@type\": \"Question\", \"name\": \"Is this exhaust system street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228051644464,"sku":"25-1030","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1998_2002_Camaro_Firebird_LS1_True_Dual_Exhaust_Axle_Exit_25-1030.jpg?v=1762207873"},{"product_id":"speed-engineering-1998-2002-camaro-firebird-ls1-stainless-off-road-y-pipe","title":"Speed Engineering Off-Road Y-Pipe — 1998–2002 Chevrolet Camaro \u0026 Pontiac Firebird\/Trans Am LS1 | 25-1002","description":"\u003cp\u003eConnecting your Speed Engineering longtube headers to the factory cat-back on your 4th gen Camaro or Firebird? This is the Y-pipe that completes the system. Built from 3\" mandrel bent 304 natural stainless steel with TIG-welded construction and stainless band clamps included — a direct-fit, purpose-built connection between your longtube headers and the factory cat-back exhaust.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This Y-pipe is designed for use with longtube headers only. It is NOT compatible with factory exhaust manifolds.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStainless Steel Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Use with Longtube Headers Only\u003c\/strong\u003e — Not compatible with factory exhaust manifolds\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro — LS1 5.7L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1998 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Camaro — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Firebird \u0026amp; Trans Am — LS1 5.7L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1998 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Pontiac Firebird\/Trans Am — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill this Y-pipe work with my factory exhaust manifolds?\u003c\/h5\u003e\n\u003cp\u003eNo. This Y-pipe is designed for use with longtube headers only. It is not compatible with factory exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWhat size tubing does this Y-pipe use?\u003c\/h5\u003e\n\u003cp\u003e3\" mandrel bent tubing with stainless band clamps included for installation.\u003c\/p\u003e\n\u003ch5\u003eWhat material is this Y-pipe made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction and mandrel-bent tubing.\u003c\/p\u003e\n\u003ch5\u003eIs this Y-pipe street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will this Y-pipe work with my factory exhaust manifolds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This Y-pipe is designed for use with longtube headers only. It is not compatible with factory exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"What size tubing does this Y-pipe use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"3\\\" mandrel bent tubing with stainless band clamps included for installation.\"}}, {\"@type\": \"Question\", \"name\": \"What material is this Y-pipe made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction and mandrel-bent tubing.\"}}, {\"@type\": \"Question\", \"name\": \"Is this Y-pipe street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228058001456,"sku":"25-1002","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1998_2002_Camaro_Firebird_LS1_Stainless_Steel_Off-Road_Y-Pipe_25-1002.jpg?v=1762207998"},{"product_id":"speed-engineering-1993-1997-camaro-firebird-1-3-4-longtube-headers-gen-2-lt1","title":"Speed Engineering 1-3\/4\" Longtube Headers — 1993–1997 Chevrolet Camaro \u0026 Pontiac Firebird\/Trans Am | Gen 2 LT1 5.7L | 25-1019","description":"\u003cp\u003eThe factory exhaust manifolds on your 4th Gen Camaro Z28 or Firebird are one of the first restrictions holding back your Gen 2 LT1. Speed Engineering's 1-3\/4\" longtube headers are a direct-fit, dyno-proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 20 rear-wheel horsepower over stock. Built from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, and full TIG-welded construction.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Note:\u003c\/strong\u003e Some earlier LT heads have a wider bolt spread. These headers measure \u003cstrong\u003e17-3\/8\" from front center bolt hole to rear center bolt hole\u003c\/strong\u003e. Verify your cylinder head bolt spacing before ordering.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-3\/4\" Primary Tubes\u003c\/strong\u003e — Sized for maximum flow on Gen 2 LT1 5.7L applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 20+ RWHP gain on Gen 2 LT1 applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with Gen 2 LT1 5.7L Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro Z28 — Gen 2 LT1 (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1993 Chevrolet Camaro Z28 (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1994 Chevrolet Camaro Z28 (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1995 Chevrolet Camaro Z28 (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1996 Chevrolet Camaro Z28 (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1997 Chevrolet Camaro Z28 (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro SS — Gen 2 LT1 (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1996 Chevrolet Camaro SS (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1997 Chevrolet Camaro SS (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Firebird — Gen 2 LT1 (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1993 Pontiac Firebird (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1994 Pontiac Firebird (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1995 Pontiac Firebird (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1996 Pontiac Firebird (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1997 Pontiac Firebird (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Firebird Trans Am — Gen 2 LT1 (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1993 Pontiac Firebird Trans Am (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1994 Pontiac Firebird Trans Am (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1995 Pontiac Firebird Trans Am (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1996 Pontiac Firebird Trans Am (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1997 Pontiac Firebird Trans Am (RWD) — 5.7L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill these headers fit all LT1 head configurations?\u003c\/h5\u003e\n\u003cp\u003eSome earlier Gen 2 LT heads have a wider bolt spread than standard. These headers measure 17-3\/8\" from front center bolt hole to rear center bolt hole. Verify your cylinder head bolt spacing before ordering to ensure proper fitment.\u003c\/p\u003e\n\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's 1-3\/4\" longtube headers are dyno proven to add over 20 rear-wheel horsepower on 1993–1997 Camaro and Firebird Gen 2 LT1 applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eDo these headers work on a Gen 5 LT1 (C7 Corvette, 5th Gen Camaro)?\u003c\/h5\u003e\n\u003cp\u003eNo. These headers are designed specifically for the Gen 2 LT1 5.7L engine found in 1993–1997 Camaro Z28\/SS and Firebird\/Trans Am. They are not compatible with the Gen 5 LT1 engine found in the C7 Corvette or 6th Gen Camaro.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will these headers fit all LT1 head configurations?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Some earlier Gen 2 LT heads have a wider bolt spread than standard. These headers measure 17-3\/8\\\" from front center bolt hole to rear center bolt hole. Verify your cylinder head bolt spacing before ordering to ensure proper fitment.\"}}, {\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-3\/4\\\" longtube headers are dyno proven to add over 20 rear-wheel horsepower on 1993–1997 Camaro and Firebird Gen 2 LT1 applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"Do these headers work on a Gen 5 LT1 (C7 Corvette, 5th Gen Camaro)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed specifically for the Gen 2 LT1 5.7L engine found in 1993–1997 Camaro Z28\/SS and Firebird\/Trans Am. They are not compatible with the Gen 5 LT1 engine found in the C7 Corvette or 6th Gen Camaro.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228063080496,"sku":"25-1019","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1993_1997_Camaro_Firebird_1-3_4_Longtube_Headers_Gen_2_LT1_Engines_25-1019.jpg?v=1762208282"},{"product_id":"speed-engineering-1993-1997-camaro-firebird-lt1-off-road-y-pipe","title":"Speed Engineering Off-Road Y-Pipe — 1993–1997 Chevrolet Camaro \u0026 Pontiac Firebird\/Trans Am LT1 F-Body | 25-1043","description":"\u003cp\u003eConnecting your longtube headers to the factory cat-back on your 1993–1997 Camaro or Firebird? Speed Engineering's 3\" off-road Y-pipe is a direct-fit connection built from 304 stainless steel with mandrel-bent tubing and TIG-welded construction. Compatible with Speed Engineering longtube headers as well as some eBay headers, PaceSetter, and Hooker Headers for the 1993–1997 F-body LT1 platform.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This Y-pipe is designed for use with longtube headers only. It is NOT compatible with factory exhaust manifolds.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNatural Stainless Steel Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with Speed Engineering, Some eBay Headers, PaceSetter, and Hooker Headers\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Camaro — LT1 5.7L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1993 Chevrolet Camaro — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1994 Chevrolet Camaro — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1995 Chevrolet Camaro — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1996 Chevrolet Camaro — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1997 Chevrolet Camaro — 5.7L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePontiac Firebird \u0026amp; Trans Am — LT1 5.7L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1993 Pontiac Firebird\/Trans Am — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1994 Pontiac Firebird\/Trans Am — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1995 Pontiac Firebird\/Trans Am — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1996 Pontiac Firebird\/Trans Am — 5.7L LT1\u003c\/li\u003e\n\u003cli\u003e1997 Pontiac Firebird\/Trans Am — 5.7L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this Y-pipe work with my factory exhaust manifolds?\u003c\/h5\u003e\u003cp\u003eNo. This Y-pipe is designed for use with longtube headers only and is not compatible with factory exhaust manifolds.\u003c\/p\u003e\u003ch5\u003eWhat header brands is this Y-pipe compatible with?\u003c\/h5\u003e\u003cp\u003eThis Y-pipe is compatible with Speed Engineering longtube headers as well as some eBay headers, PaceSetter, and Hooker Headers for 1993–1997 Camaro and Firebird\/Trans Am LT1 applications.\u003c\/p\u003e\u003ch5\u003eWhat size tubing does this Y-pipe use?\u003c\/h5\u003e\u003cp\u003e3\" mandrel bent tubing with natural stainless steel band clamps included for installation.\u003c\/p\u003e\u003ch5\u003eIs this Y-pipe street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this Y-pipe work with my factory exhaust manifolds?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This Y-pipe is designed for use with longtube headers only and is not compatible with factory exhaust manifolds.\"}},{\"@type\":\"Question\",\"name\":\"What header brands is this Y-pipe compatible with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This Y-pipe is compatible with Speed Engineering longtube headers as well as some eBay headers, PaceSetter, and Hooker Headers for 1993–1997 Camaro and Firebird\/Trans Am LT1 applications.\"}},{\"@type\":\"Question\",\"name\":\"What size tubing does this Y-pipe use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"3\\\" mandrel bent tubing with natural stainless steel band clamps included for installation.\"}},{\"@type\":\"Question\",\"name\":\"Is this Y-pipe street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228063473712,"sku":"25-1043","price":159.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1993_1997_Camaro_Firebird_LT1_Off-Road_Y-Pipe_F-Body_25-1043.png?v=1762208376"},{"product_id":"speed-engineering-2020-2023-c8-corvette-1-7-8-headers-lt2","title":"Speed Engineering 1-7\/8\" Shorty Headers — 2020–2023 Chevrolet C8 Corvette | LT2 6.2L | 25-1075","description":"\u003cp\u003eThe factory exhaust manifolds on your C8 Corvette are holding back your LT2. Speed Engineering's 1-7\/8\" shorty headers are a direct-fit upgrade specifically engineered for the mid-engine C8 platform — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel. Dyno proven to deliver over 20 rear-wheel horsepower over stock. Due to the tight mid-engine bay environment, heat wrap and stainless cable ties are included and it is highly recommended to wrap and insulate waterlines and other components throughout the engine bay during installation.\u003c\/p\u003e\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Installation Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWill NOT fit Z06 models\u003c\/strong\u003e — LT2 6.2L naturally aspirated engine only. Does not fit the Z06 LT6 flat-plane crank engine\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWill NOT fit convertible applications\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWill NOT work with the factory carbon fiber engine cover option\u003c\/strong\u003e — some carbon fiber will need to be removed for proper fitment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat wrap and stainless cable ties are included\u003c\/strong\u003e — it is highly recommended to insulate waterlines and miscellaneous components throughout the engine bay\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-7\/8\" Port-Matched Primary Tubes\u003c\/strong\u003e — Maximum flow from cylinder head to collector for aggressive LT2 performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShorty Header Design\u003c\/strong\u003e — Engineered for the mid-engine C8 platform where longtube headers are not a fitment option\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the cylinder head for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Wrap and Stainless Cable Ties Included\u003c\/strong\u003e — For thermal protection of nearby components in the tight mid-engine bay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 20+ RWHP gain on C8 LT2 applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6.2L LT2 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C8 Corvette — LT2 6.2L (Coupe Only)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2020 Chevrolet Corvette C8 Coupe — 6.2L LT2 ⚠️ Does NOT fit Z06 or Convertible\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Corvette C8 Coupe — 6.2L LT2 ⚠️ Does NOT fit Z06 or Convertible\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Corvette C8 Coupe — 6.2L LT2 ⚠️ Does NOT fit Z06 or Convertible\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Corvette C8 Coupe — 6.2L LT2 ⚠️ Does NOT fit Z06 or Convertible\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill these headers fit my C8 Z06?\u003c\/h5\u003e\u003cp\u003eNo. These headers are designed for the LT2 6.2L naturally aspirated engine only. The C8 Z06 uses the LT6 5.5L flat-plane crank engine, which is a completely different architecture and is not compatible with these headers.\u003c\/p\u003e\u003ch5\u003eWill these fit a C8 Corvette Convertible?\u003c\/h5\u003e\u003cp\u003eNo. These headers will not work on convertible applications.\u003c\/p\u003e\u003ch5\u003eWill these work if my C8 has the factory carbon fiber engine cover?\u003c\/h5\u003e\u003cp\u003eNot without modification. These headers will not work with the factory carbon fiber engine cover option. Some carbon fiber will need to be removed for proper fitment.\u003c\/p\u003e\u003ch5\u003eWhy are heat wrap and cable ties included?\u003c\/h5\u003e\u003cp\u003eThe C8's mid-engine bay is a tight environment with waterlines and other components in close proximity to the headers. Speed Engineering includes heat wrap and stainless cable ties and strongly recommends insulating waterlines and other nearby components during installation to protect them from exhaust heat.\u003c\/p\u003e\u003ch5\u003eWhy do these headers gain 20+ RWHP instead of the 25+ RWHP seen on other Speed Engineering headers?\u003c\/h5\u003e\u003cp\u003eThese are shorty headers — the mid-engine C8 platform does not allow for longtube headers due to the chassis layout. Shorty headers deliver meaningful power gains over stock manifolds but less than longtubes due to the shorter primary tube length.\u003c\/p\u003e\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will these headers fit my C8 Z06?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These headers are designed for the LT2 6.2L naturally aspirated engine only. The C8 Z06 uses the LT6 5.5L flat-plane crank engine, which is a completely different architecture and is not compatible with these headers.\"}},{\"@type\":\"Question\",\"name\":\"Will these fit a C8 Corvette Convertible?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These headers will not work on convertible applications.\"}},{\"@type\":\"Question\",\"name\":\"Will these work if my C8 has the factory carbon fiber engine cover?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not without modification. These headers will not work with the factory carbon fiber engine cover option. Some carbon fiber will need to be removed for proper fitment.\"}},{\"@type\":\"Question\",\"name\":\"Why are heat wrap and cable ties included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The C8's mid-engine bay is a tight environment with waterlines and other components in close proximity to the headers. Speed Engineering includes heat wrap and stainless cable ties and strongly recommends insulating waterlines and other nearby components during installation to protect them from exhaust heat.\"}},{\"@type\":\"Question\",\"name\":\"Why do these headers gain 20+ RWHP instead of the 25+ RWHP seen on other Speed Engineering headers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"These are shorty headers — the mid-engine C8 platform does not allow for longtube headers due to the chassis layout. Shorty headers deliver meaningful power gains over stock manifolds but less than longtubes due to the shorter primary tube length.\"}},{\"@type\":\"Question\",\"name\":\"What material are these headers made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\"}},{\"@type\":\"Question\",\"name\":\"Are these headers street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228097454128,"sku":"25-1075","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2020_2023_C8_Corvette_1-7_8_Headers_LT2_Engines_25-1075.jpg?v=1762208834"},{"product_id":"speed-engineering-2014-2019-c7-corvette-2-longtube-headers-lt1-lt4","title":"Speed Engineering 2\" Longtube Headers — 2014–2019 Chevrolet C7 Corvette | LT1\/LT4 6.2L | 25-1067","description":"\u003cp\u003eLooking to maximize exhaust flow on your C7 Corvette? Speed Engineering's 2\" longtube headers are the step up from the 1-7\/8\" version — delivering maximum primary tube diameter for aggressive builds with supporting modifications. Mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel. Dyno proven to deliver over 25 rear-wheel horsepower over stock. Engineered with great ground clearance for lowered C7 builds.\u003c\/p\u003e\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, and full TIG-welded construction.\u003c\/p\u003e\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed Engineering X-pipe kit is required\u003c\/strong\u003e for proper installation — sold separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual transmission applications\u003c\/strong\u003e will need to reuse the factory exhaust hanger for X-pipe installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 2\" Port-Matched Primary Tubes\u003c\/strong\u003e — Maximum flow from cylinder head to collector for aggressive LT performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eGreat Ground Clearance for Lowered Vehicles\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on C7 Corvette applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6.2L LT1 and LT4 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C7 Corvette — LT1\/LT4 6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2014 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C7 Corvette Z06 — LT4 6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat is the difference between these headers and the 1-7\/8\" C7 headers (25-1044)?\u003c\/h5\u003e\u003cp\u003eThe primary tube diameter is the key difference. The 2\" headers deliver maximum exhaust flow and are best suited for more aggressive builds with supporting modifications such as a cam, heads, or forced induction. The 1-7\/8\" headers are a strong choice for most street and performance builds across a broader RPM range.\u003c\/p\u003e\u003ch5\u003eDo I need an X-pipe kit to install these headers?\u003c\/h5\u003e\u003cp\u003eYes. Speed Engineering's X-pipe kit is required for proper installation and is sold separately.\u003c\/p\u003e\u003ch5\u003eDoes my manual transmission C7 require any special considerations for X-pipe installation?\u003c\/h5\u003e\u003cp\u003eYes. Manual transmission applications will need to reuse the factory exhaust hanger for proper X-pipe installation.\u003c\/p\u003e\u003ch5\u003eHow much horsepower do these headers add to a C7 Corvette?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's 2\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on C7 Corvette LT1 and LT4 applications compared to stock exhaust manifolds.\u003c\/p\u003e\u003ch5\u003eAre these headers good for lowered C7 Corvettes?\u003c\/h5\u003e\u003cp\u003eYes. These headers are engineered with great ground clearance, making them a solid choice for lowered C7 builds.\u003c\/p\u003e\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible with the 6.2L LT1 found in the 2014–2019 C7 Corvette Base and Grand Sport, and the 6.2L LT4 found in the 2015–2019 C7 Corvette Z06.\u003c\/p\u003e\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the difference between these headers and the 1-7\/8\\\" C7 headers (25-1044)?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The primary tube diameter is the key difference. The 2\\\" headers deliver maximum exhaust flow and are best suited for more aggressive builds with supporting modifications such as a cam, heads, or forced induction. The 1-7\/8\\\" headers are a strong choice for most street and performance builds across a broader RPM range.\"}},{\"@type\":\"Question\",\"name\":\"Do I need an X-pipe kit to install these headers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Speed Engineering's X-pipe kit is required for proper installation and is sold separately.\"}},{\"@type\":\"Question\",\"name\":\"Does my manual transmission C7 require any special considerations for X-pipe installation?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Manual transmission applications will need to reuse the factory exhaust hanger for proper X-pipe installation.\"}},{\"@type\":\"Question\",\"name\":\"How much horsepower do these headers add to a C7 Corvette?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Speed Engineering's 2\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on C7 Corvette LT1 and LT4 applications compared to stock exhaust manifolds.\"}},{\"@type\":\"Question\",\"name\":\"Are these headers good for lowered C7 Corvettes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. These headers are engineered with great ground clearance, making them a solid choice for lowered C7 builds.\"}},{\"@type\":\"Question\",\"name\":\"What engines are these headers compatible with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"These headers are compatible with the 6.2L LT1 found in the 2014–2019 C7 Corvette Base and Grand Sport, and the 6.2L LT4 found in the 2015–2019 C7 Corvette Z06.\"}},{\"@type\":\"Question\",\"name\":\"What material are these headers made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\"}},{\"@type\":\"Question\",\"name\":\"Are these headers street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228125405232,"sku":"25-1067","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2014_2019_C7_Corvette_2_Longtube_Headers_LT1_LT4_Engines_25-1067.png?v=1762209038"},{"product_id":"speed-engineering-2014-2019-c7-corvette-1-7-8-longtube-headers-lt1-lt4","title":"Speed Engineering 1-7\/8\" Longtube Headers — 2014–2019 Chevrolet C7 Corvette | LT1\/LT4 6.2L | 25-1044","description":"\u003cp\u003eThe factory exhaust manifolds on your C7 Corvette are leaving power on the table. Speed Engineering's 1-7\/8\" longtube headers are a direct-fit, dyno-proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 25 rear-wheel horsepower over stock. Engineered with improved ground clearance for a strong choice on lowered C7 builds.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, and full TIG-welded construction.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed Engineering X-pipe kit is required\u003c\/strong\u003e for proper installation — sold separately\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eX-pipe is natural stainless steel, not polished\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual transmission applications\u003c\/strong\u003e will need to reuse the factory exhaust hanger for X-pipe installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-7\/8\" Port-Matched Primary Tubes\u003c\/strong\u003e — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eGreat Ground Clearance for Lowered Vehicles\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on C7 Corvette applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6.2L LT1 and LT4 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet C7 Corvette — LT1\/LT4 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2014 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet C7 Corvette Z06 — LT4 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2015 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eDo I need an X-pipe kit to install these headers?\u003c\/h5\u003e\u003cp\u003eYes. Speed Engineering's X-pipe kit is required for proper installation and is sold separately. Note that the X-pipe is natural stainless steel finish, not polished.\u003c\/p\u003e\n\u003ch5\u003eDoes my manual transmission C7 require any special considerations for X-pipe installation?\u003c\/h5\u003e\u003cp\u003eYes. Manual transmission applications will need to reuse the factory exhaust hanger for proper X-pipe installation.\u003c\/p\u003e\n\u003ch5\u003eHow much horsepower do these headers add to a C7 Corvette?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's 1-7\/8\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on C7 Corvette LT1 and LT4 applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eAre these headers good for lowered C7 Corvettes?\u003c\/h5\u003e\u003cp\u003eYes. These headers are specifically engineered with improved ground clearance, making them a strong choice for lowered C7 builds.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible with the 6.2L LT1 found in the 2014–2019 C7 Corvette Base and Grand Sport, and the 6.2L LT4 found in the 2015–2019 C7 Corvette Z06.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Do I need an X-pipe kit to install these headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Speed Engineering's X-pipe kit is required for proper installation and is sold separately. Note that the X-pipe is natural stainless steel finish, not polished.\"}}, {\"@type\": \"Question\", \"name\": \"Does my manual transmission C7 require any special considerations for X-pipe installation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228125569072,"sku":"25-1044","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2014_2019_C7_Corvette_1-7_8_Longtube_Headers_LT1_LT4_Engines_25-1044.jpg?v=1762209152"},{"product_id":"speed-engineering-2014-2019-c7-corvette-cat-back-x-pipe-kit-lt1-lt4-lt5","title":"Speed Engineering Cat-Back X-Pipe Kit — 2014–2019 Chevrolet C7 Corvette | LT1\/LT4\/LT5 6.2L | 25-1082","description":"\u003cp\u003eLooking to improve exhaust tone and flow on your C7 Corvette without removing the factory manifolds or catalytic converters? Speed Engineering's 3\" cat-back X-pipe kit bolts directly to the factory exhaust system, connects both sides through an X-style crossover, and keeps all O₂ sensors in place — no tuning required. A clean, bolt-on upgrade that delivers improved exhaust tone and flow while working within your factory setup.\u003c\/p\u003e\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent tubing and TIG-welded construction.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This X-pipe is designed to work with factory exhaust manifolds and catalytic converters only. It does NOT work with Speed Engineering longtube headers.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eX-Style Crossover Design\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Bolt-On to Factory Exhaust\u003c\/strong\u003e — No cutting, welding, or modifications required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetains Both Front and Rear O₂ Sensors\u003c\/strong\u003e — No check engine light, no tuning required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with LT1, LT4, and LT5 6.2L Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C7 Corvette Base \u0026amp; Grand Sport — LT1 6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2014 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Corvette C7 — 6.2L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C7 Corvette Z06 — LT4 6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Corvette C7 Z06 — 6.2L LT4\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C7 Corvette ZR1 — LT5 6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e2019 Chevrolet Corvette C7 ZR1 — 6.2L LT5\u003c\/li\u003e\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this X-pipe work with Speed Engineering longtube headers?\u003c\/h5\u003e\u003cp\u003eNo. This X-pipe is designed to work with factory exhaust manifolds and catalytic converters only. It is not compatible with Speed Engineering longtube headers or any aftermarket longtube header system.\u003c\/p\u003e\u003ch5\u003eWill I get a check engine light after installing this X-pipe?\u003c\/h5\u003e\u003cp\u003eNo. This system retains both the front and rear O₂ sensors in their factory locations so no check engine light will be triggered and no PCM tuning is required.\u003c\/p\u003e\u003ch5\u003eDoes this X-pipe require any cutting or welding?\u003c\/h5\u003e\u003cp\u003eNo. This is a direct bolt-on system designed to connect to the factory exhaust with no cutting, welding, or modifications required.\u003c\/p\u003e\u003ch5\u003eWhat engines is this X-pipe compatible with?\u003c\/h5\u003e\u003cp\u003eThis X-pipe is compatible with LT1, LT4, and LT5 6.2L engines found in 2014–2019 C7 Corvette Base, Grand Sport, Z06, and ZR1 models.\u003c\/p\u003e\u003ch5\u003eWhat material is this X-pipe made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction.\u003c\/p\u003e\u003ch5\u003eIs this X-pipe street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this X-pipe work with Speed Engineering longtube headers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This X-pipe is designed to work with factory exhaust manifolds and catalytic converters only. 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Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228128518192,"sku":"25-1082","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2014_2019_C7_Corvette_Cat-Back_X-Pipe_Kit_LT1_LT4_LT5_Engines_25-1082.png?v=1762209235"},{"product_id":"speed-engineering-2014-2019-c7-corvette-longtube-x-pipe-kit-lt1-lt4","title":"Speed Engineering Longtube X-Pipe Kit — 2014–2019 Chevrolet C7 Corvette | LT1\/LT4 6.2L | 25-1045","description":"\u003cp\u003eConnecting your Speed Engineering longtube headers to the axle-back on your C7 Corvette? This X-pipe kit is the crossover that completes the system. Built from 3\" mandrel bent 304 natural stainless steel with TIG-welded construction and 3\" band clamps included — designed specifically for Speed Engineering longtube headers. Covers all C7 Corvette LT1 and LT4 applications.\u003c\/p\u003e\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis X-pipe is designed for Speed Engineering longtube headers only\u003c\/strong\u003e — it will NOT work as a factory exhaust manifold replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual transmission applications need to reuse the factory exhaust hanger\u003c\/strong\u003e for proper X-pipe installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue X-Pipe Design\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6.2L LT1 and LT4 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C7 Corvette — LT1 6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2014 Chevrolet Corvette C7 (RWD) — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Corvette C7 (RWD) — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Corvette C7 (RWD) — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Corvette C7 (RWD) — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Corvette C7 (RWD) — 6.2L LT1\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Corvette C7 (RWD) — 6.2L LT1\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C7 Corvette Z06 — LT4 6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Chevrolet Corvette C7 Z06 (RWD) — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Corvette C7 Z06 (RWD) — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Corvette C7 Z06 (RWD) — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Corvette C7 Z06 (RWD) — 6.2L LT4\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Corvette C7 Z06 (RWD) — 6.2L LT4\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this X-pipe work with factory exhaust manifolds?\u003c\/h5\u003e\u003cp\u003eNo. This X-pipe is designed for use with Speed Engineering longtube headers only and will not work as a factory exhaust manifold replacement.\u003c\/p\u003e\u003ch5\u003eDo manual transmission cars need anything special for installation?\u003c\/h5\u003e\u003cp\u003eYes. Manual transmission applications need to reuse the factory exhaust hanger for proper X-pipe installation.\u003c\/p\u003e\u003ch5\u003eDoes this X-pipe pair with the Speed Engineering axle-back exhaust system (25-1081)?\u003c\/h5\u003e\u003cp\u003eYes. This X-pipe connects the longtube headers to the axle-back exhaust system, which can be the factory exhaust (with included reducers) or the Speed Engineering true dual axle-back system.\u003c\/p\u003e\u003ch5\u003eWhat size tubing does this X-pipe use?\u003c\/h5\u003e\u003cp\u003e3\" diameter, mandrel bent for consistent flow throughout. Band clamps are included for installation.\u003c\/p\u003e\u003ch5\u003eWhat material is this X-pipe made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction.\u003c\/p\u003e\u003ch5\u003eIs this X-pipe street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. 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This X-pipe connects the longtube headers to the axle-back exhaust system, which can be the factory exhaust (with included reducers) or the Speed Engineering true dual axle-back system.\"}},{\"@type\":\"Question\",\"name\":\"What size tubing does this X-pipe use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"3\\\" diameter, mandrel bent for consistent flow throughout. Band clamps are included for installation.\"}},{\"@type\":\"Question\",\"name\":\"What material is this X-pipe made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction.\"}},{\"@type\":\"Question\",\"name\":\"Is this X-pipe street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This is a race-only product intended for closed-course competition use only. 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Engineered with improved ground clearance over competitors, making them an especially strong choice for lowered C6 builds across Base, Z06, and ZR1 trims.\u003c\/p\u003e\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, merge spikes, and full TIG-welded construction.\u003c\/p\u003e\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Installation Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed Engineering X-pipe kit is required\u003c\/strong\u003e for proper installation — sold separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase\/GS models\u003c\/strong\u003e use the 3\" X-pipe with 2.75\" reducers to factory exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZ06 models\u003c\/strong\u003e use the 3\" X-pipe with 3\" connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L60E transmission\u003c\/strong\u003e — true dual exhaust does NOT work with early 4L60 transmissions. Modification to the passenger side tube is required for 4L60E fitment. Compatible with 6 speed automatic and manual transmissions without modification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear exiting exhaust kit\u003c\/strong\u003e will NOT work with vehicles equipped with a differential cooler\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" Primary Tubes with Merge Spike\u003c\/strong\u003e — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Ground Clearance Over Competitors\u003c\/strong\u003e — Engineered with extra clearance, ideal for lowered C6 builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on C6 Corvette applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6.0L LS2\/LS6 and 6.2L LS3\/LS7 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C6 Corvette Base \u0026amp; Grand Sport (RWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2005 Chevrolet Corvette C6 (RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Corvette C6 (RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Corvette C6 (RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Corvette C6 (RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C6 Corvette Z06 (RWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2005 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C6 Corvette ZR1 (RWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2009 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eHow much horsepower do these headers add to a C6 Corvette?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's 2\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on C6 Corvette LS2, LS3, LS6, and LS7 applications compared to stock exhaust manifolds.\u003c\/p\u003e\u003ch5\u003eDo I need an X-pipe kit to install these headers?\u003c\/h5\u003e\u003cp\u003eYes. Speed Engineering's X-pipe kit is required for proper installation. Base and GS models use the 3\" X-pipe with 2.75\" reducers to factory exhaust. Z06 models use the 3\" X-pipe with a 3\" connection. The X-pipe is sold separately.\u003c\/p\u003e\u003ch5\u003eWill these work with my 4L60E transmission?\u003c\/h5\u003e\u003cp\u003eTrue dual exhaust does not work with early 4L60 transmissions without modification. A modification to the passenger side tube is required for 4L60E fitment. These headers work with 6 speed automatic and manual transmissions without modification.\u003c\/p\u003e\u003ch5\u003eWill the rear exiting exhaust kit work on my C6?\u003c\/h5\u003e\u003cp\u003eThe rear exiting exhaust kit will NOT work with vehicles equipped with a differential cooler.\u003c\/p\u003e\u003ch5\u003eAre these headers good for lowered C6 Corvettes?\u003c\/h5\u003e\u003cp\u003eYes. Speed Engineering specifically engineered these headers with improved ground clearance compared to competitors, making them a strong choice for lowered C6 builds.\u003c\/p\u003e\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible with the 6.0L LS2\/LS6, 6.2L LS3\/LS9, and 7.0L LS7 engines found in 2005–2013 C6 Corvette Base, Z06, and ZR1 models.\u003c\/p\u003e\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\u003c\/p\u003e\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\u003cp\u003eYes. Standard graphite manifold gaskets are included with the headers.\u003c\/p\u003e\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How much horsepower do these headers add to a C6 Corvette?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Speed Engineering's 2\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on C6 Corvette LS2, LS3, LS6, and LS7 applications compared to stock exhaust manifolds.\"}},{\"@type\":\"Question\",\"name\":\"Do I need an X-pipe kit to install these headers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Speed Engineering's X-pipe kit is required for proper installation. Base and GS models use the 3\\\" X-pipe with 2.75\\\" reducers to factory exhaust. Z06 models use the 3\\\" X-pipe with a 3\\\" connection. The X-pipe is sold separately.\"}},{\"@type\":\"Question\",\"name\":\"Will these work with my 4L60E transmission?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"True dual exhaust does not work with early 4L60 transmissions without modification. A modification to the passenger side tube is required for 4L60E fitment. These headers work with 6 speed automatic and manual transmissions without modification.\"}},{\"@type\":\"Question\",\"name\":\"Will the rear exiting exhaust kit work on my C6?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The rear exiting exhaust kit will NOT work with vehicles equipped with a differential cooler.\"}},{\"@type\":\"Question\",\"name\":\"Are these headers good for lowered C6 Corvettes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Speed Engineering specifically engineered these headers with improved ground clearance compared to competitors, making them a strong choice for lowered C6 builds.\"}},{\"@type\":\"Question\",\"name\":\"What engines are these headers compatible with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"These headers are compatible with the 6.0L LS2\/LS6, 6.2L LS3\/LS9, and 7.0L LS7 engines found in 2005–2013 C6 Corvette Base, Z06, and ZR1 models.\"}},{\"@type\":\"Question\",\"name\":\"What material are these headers made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\"}},{\"@type\":\"Question\",\"name\":\"Are gaskets included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Standard graphite manifold gaskets are included with the headers.\"}},{\"@type\":\"Question\",\"name\":\"Are these headers street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228154306608,"sku":"25-1068","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2005_2013_C6_Corvette_2_Longtube_Headers_LS2_LS3_LS6_LS7_Engines_25-1068.png?v=1762209484"},{"product_id":"speed-engineering-2005-2013-c6-corvette-1-7-8-longtube-headers-ls2-ls3-ls7","title":"Speed Engineering 1-7\/8\" Longtube Headers — 2005–2013 Chevrolet C6 Corvette | LS2\/LS3\/LS6\/LS7\/LS9 | 25-1128","description":"\u003cp\u003eThe factory exhaust manifolds on your C6 Corvette are leaving power on the table. Speed Engineering's 1-7\/8\" longtube headers are a direct-fit, dyno-proven upgrade — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel with merge spikes. Engineered with improved ground clearance over competitors — a strong choice for lowered C6 builds. Delivers over 25 rear-wheel horsepower over stock. Speed Engineering X-pipe kit is required for installation and sold separately.\u003c\/p\u003e\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed Engineering X-pipe kit is required\u003c\/strong\u003e for proper installation — sold separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase\/GS models:\u003c\/strong\u003e 3\" X-pipe with 2.75\" reducers to factory exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZ06 models:\u003c\/strong\u003e 3\" X-pipe with 3\" connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L60E transmission:\u003c\/strong\u003e True dual exhaust does NOT work with early 4L60 transmissions. Modification to the passenger side tube is required for 4L60E fitment. Compatible with 6 speed automatic and manual transmissions without modification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear exiting exhaust kit\u003c\/strong\u003e will NOT work with vehicles equipped with a differential cooler\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-7\/8\" Primary Tubes with Merge Spike\u003c\/strong\u003e — Maximum flow from cylinder head to collector for aggressive LS performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Ground Clearance Over Competitors\u003c\/strong\u003e — Engineered with extra clearance ideal for lowered C6 builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on C6 Corvette applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6.0L LS2\/LS6, 6.2L LS3\/LS9, and 7.0L LS7 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C6 Corvette Base \u0026amp; Grand Sport (RWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2005 Chevrolet Corvette C6 (RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Corvette C6 (RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Corvette C6 (RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C6 Corvette Z06 (RWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2006 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C6 Corvette ZR1 (RWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2009 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eIs an X-pipe included with these headers?\u003c\/h5\u003e\u003cp\u003eNo. These are headers only. The Speed Engineering X-pipe kit is required for installation and is sold separately. Base and Grand Sport models use a 3\" X-pipe with 2.75\" reducers; Z06 models use a 3\" X-pipe with a 3\" connection.\u003c\/p\u003e\u003ch5\u003eWhat is the difference between these headers and the full kit (25-1128)?\u003c\/h5\u003e\u003cp\u003eThese are headers only. The full kit includes the 1-7\/8\" headers plus the X-pipe, header bolts, and MLS exhaust gaskets — a complete front-to-axle-back connection. Choose headers only if you already have or plan to source the X-pipe separately.\u003c\/p\u003e\u003ch5\u003eWill these work with my 4L60E transmission?\u003c\/h5\u003e\u003cp\u003eTrue dual exhaust does not work with early 4L60 transmissions without modification. A modification to the passenger side tube is required for 4L60E fitment. These headers work with 6 speed automatic and manual transmissions without modification.\u003c\/p\u003e\u003ch5\u003eWill the rear exiting exhaust kit work on my C6?\u003c\/h5\u003e\u003cp\u003eThe rear exiting exhaust kit will NOT work with vehicles equipped with a differential cooler.\u003c\/p\u003e\u003ch5\u003eAre these headers good for lowered C6 Corvettes?\u003c\/h5\u003e\u003cp\u003eYes. Speed Engineering engineered these headers with improved ground clearance over competitors, making them a strong choice for lowered C6 builds.\u003c\/p\u003e\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's 1-7\/8\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on C6 Corvette applications compared to stock exhaust manifolds.\u003c\/p\u003e\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible with the 6.0L LS2\/LS6, 6.2L LS3\/LS9, and 7.0L LS7 found in 2005–2013 C6 Corvette Base, Z06, and ZR1 models.\u003c\/p\u003e\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\u003c\/p\u003e\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Is an X-pipe included with these headers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These are headers only. The Speed Engineering X-pipe kit is required for installation and is sold separately. Base and Grand Sport models use a 3\\\" X-pipe with 2.75\\\" reducers; Z06 models use a 3\\\" X-pipe with a 3\\\" connection.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between these headers and the full kit (25-1128)?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"These are headers only. The full kit includes the 1-7\/8\\\" headers plus the X-pipe, header bolts, and MLS exhaust gaskets — a complete front-to-axle-back connection. Choose headers only if you already have or plan to source the X-pipe separately.\"}},{\"@type\":\"Question\",\"name\":\"Will these work with my 4L60E transmission?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"True dual exhaust does not work with early 4L60 transmissions without modification. A modification to the passenger side tube is required for 4L60E fitment. These headers work with 6 speed automatic and manual transmissions without modification.\"}},{\"@type\":\"Question\",\"name\":\"Will the rear exiting exhaust kit work on my C6?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The rear exiting exhaust kit will NOT work with vehicles equipped with a differential cooler.\"}},{\"@type\":\"Question\",\"name\":\"Are these headers good for lowered C6 Corvettes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Speed Engineering engineered these headers with improved ground clearance over competitors, making them a strong choice for lowered C6 builds.\"}},{\"@type\":\"Question\",\"name\":\"How much horsepower do these headers add?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Speed Engineering's 1-7\/8\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on C6 Corvette applications compared to stock exhaust manifolds.\"}},{\"@type\":\"Question\",\"name\":\"What engines are these headers compatible with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"These headers are compatible with the 6.0L LS2\/LS6, 6.2L LS3\/LS9, and 7.0L LS7 found in 2005–2013 C6 Corvette Base, Z06, and ZR1 models.\"}},{\"@type\":\"Question\",\"name\":\"What material are these headers made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\"}},{\"@type\":\"Question\",\"name\":\"Are these headers street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228154601520,"sku":"25-1128","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2005_2013_C6_Corvette_1-7_8_Longtube_Headers_LS2_LS3_LS6_LS7_Engines_25-1128.png?v=1762209572"},{"product_id":"speed-engineering-2005-2013-c6-corvette-x-pipe-kit-ls2-ls3-ls7","title":"Speed Engineering X-Pipe Kit — 2005–2013 Chevrolet C6 Corvette | LS2\/LS3\/LS7 | 25-1053","description":"\u003cp\u003eConnecting your Speed Engineering longtube headers to the axle-back on your C6 Corvette? This X-pipe kit is the crossover that completes the system. Built from 3\" mandrel bent 304 natural stainless steel with TIG-welded construction and 3\" band clamps included — designed specifically for Speed Engineering longtube headers. Optional Z06 3\" tubing is included to accommodate the Z06's chassis-specific routing. Covers LS2, LS3, and LS7 applications across the full C6 model range.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This X-pipe is designed for Speed Engineering longtube headers only — it will NOT work as a factory exhaust manifold replacement.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue X-Pipe Design\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes Optional Z06 3\" Tubing\u003c\/strong\u003e — Accommodates Z06-specific chassis routing\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with LS2, LS3, and LS7 Engines (6.0L, 6.2L, 7.0L)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C6 Corvette — LS2 6.0L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2005 Chevrolet Corvette C6 (RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Corvette C6 (RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Corvette C6 (RWD) — 6.0L LS2\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C6 Corvette — LS3 6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2008 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Corvette C6 (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C6 Corvette Z06 — LS7 7.0L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2006 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this X-pipe work with factory exhaust manifolds?\u003c\/h5\u003e\u003cp\u003eNo. This X-pipe is designed for use with Speed Engineering longtube headers only and will not work as a factory exhaust manifold replacement.\u003c\/p\u003e\u003ch5\u003eDoes this fit the Z06?\u003c\/h5\u003e\u003cp\u003eYes. Optional Z06 3\" tubing is included to accommodate the Z06's chassis-specific exhaust routing.\u003c\/p\u003e\u003ch5\u003eWhat engines is this X-pipe compatible with?\u003c\/h5\u003e\u003cp\u003eThis X-pipe is compatible with LS2 (6.0L, 2005–2007), LS3 (6.2L, 2008–2013), and LS7 (7.0L, Z06) applications.\u003c\/p\u003e\u003ch5\u003eWhat size tubing does this X-pipe use?\u003c\/h5\u003e\u003cp\u003e3\" diameter, mandrel bent for consistent flow throughout. Band clamps are included for installation.\u003c\/p\u003e\u003ch5\u003eWhat material is this X-pipe made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction.\u003c\/p\u003e\u003ch5\u003eIs this X-pipe street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this X-pipe work with factory exhaust manifolds?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This X-pipe is designed for use with Speed Engineering longtube headers only and will not work as a factory exhaust manifold replacement.\"}},{\"@type\":\"Question\",\"name\":\"Does this fit the Z06?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Optional Z06 3\\\" tubing is included to accommodate the Z06's chassis-specific exhaust routing.\"}},{\"@type\":\"Question\",\"name\":\"What engines is this X-pipe compatible with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This X-pipe is compatible with LS2 (6.0L, 2005–2007), LS3 (6.2L, 2008–2013), and LS7 (7.0L, Z06) applications.\"}},{\"@type\":\"Question\",\"name\":\"What size tubing does this X-pipe use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"3\\\" diameter, mandrel bent for consistent flow throughout. Band clamps are included for installation.\"}},{\"@type\":\"Question\",\"name\":\"What material is this X-pipe made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction.\"}},{\"@type\":\"Question\",\"name\":\"Is this X-pipe street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228165677104,"sku":"25-1053","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2005_2013_C6_Corvette_X-Pipe_Kit_LS2_LS3_LS7_Engines_25-1053.png?v=1762209674"},{"product_id":"speed-engineering-corvette-c6-true-dual-exhaust-2005-2013-ls2-ls3-ls7-engines","title":"Speed Engineering Corvette C6 True Dual Exhaust 2005-2013 (LS2 LS3 LS7 ENGINES) 25-1063","description":"\u003cp\u003eSpeed Engineering true dual exhaust is made from 304 stainless steel and offers great quality, performance, and affordability. Speed Engineering's exhaust is mandrel bent, TIG-welded, and features natural stainless steel construction. All Speed Engineering exhaust products are dyno proven. Speed Engineering stands behind this exhaust: you will not find a better fitting, quality built, budget exhaust for your vehicle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures include:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMandrel Bent 3\" Tubing\u003c\/li\u003e\n\u003cli\u003eOptional True Dual X-Pipe System\u003c\/li\u003e\n\u003cli\u003e3\" Stainless Band Clamps\u003c\/li\u003e\n\u003cli\u003eInsulated Bullet Style Blow Through Mufflers\u003c\/li\u003e\n\u003cli\u003eV8 Engines Only\u003c\/li\u003e\n\u003cli\u003e6.0L, 6.2L, \u0026amp; 7.0L Engines\u003c\/li\u003e\n\u003cli\u003e304 Natural Stainless Steel\u003c\/li\u003e\n\u003cli\u003eDual 4\" Exhaust Tips\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2005 C6 Corvette\u003c\/li\u003e\n\u003cli\u003e2006 C6 Corvette\u003c\/li\u003e\n\u003cli\u003e2007 C6 Corvette\u003c\/li\u003e\n\u003cli\u003e2008 C6 Corvette\u003c\/li\u003e\n\u003cli\u003e2009 C6 Corvette\u003c\/li\u003e\n\u003cli\u003e2010 C6 Corvette\u003c\/li\u003e\n\u003cli\u003e2011 C6 Corvette\u003c\/li\u003e\n\u003cli\u003e2012 C6 Corvette\u003c\/li\u003e\n\u003cli\u003e2013 C6 Corvette\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e True Dual Exhaust does not work with early 4L60 transmissions. Only 6-speed auto and manual transmissions. Modification will be needed on the passenger side tube in order for a 4L60E transmission to work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Will not work with vehicles equipped with a differential cooler.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This system is designed to work with Speed Engineering headers and x-pipe only. Axle-back will need fabrication if you are trying to connect to the OEM exhaust, or other manufacturers' products.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e In order to make this axle-back a complete bolt-on kit, it will require Speed Engineering headers and x-pipe.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat material is this exhaust made from?\u003c\/h5\u003e\u003cp\u003eIt's made from 304 natural stainless steel, mandrel bent and TIG-welded for great quality, performance, and affordability.\u003c\/p\u003e\u003ch5\u003eWhich Corvette C6 model years does this fit?\u003c\/h5\u003e\u003cp\u003eThis true dual exhaust fits 2005-2013 C6 Corvettes with 6.0L, 6.2L, or 7.0L V8 engines (LS2, LS3, LS7).\u003c\/p\u003e\u003ch5\u003eWill this work with a 4L60E transmission?\u003c\/h5\u003e\u003cp\u003eNo. True Dual Exhaust does not work with early 4L60 transmissions. Only 6-speed auto and manual transmissions are compatible, and modification will be needed on the passenger side tube for a 4L60E transmission to work.\u003c\/p\u003e\u003ch5\u003eIs this compatible with a differential cooler?\u003c\/h5\u003e\u003cp\u003eNo, this exhaust will not work with vehicles equipped with a differential cooler.\u003c\/p\u003e\u003ch5\u003eDo I need other Speed Engineering parts for a complete bolt-on kit?\u003c\/h5\u003e\u003cp\u003eYes. This system is designed to work with Speed Engineering headers and x-pipe only. In order to make this axle-back a complete bolt-on kit, it requires Speed Engineering headers and x-pipe; axle-back will need fabrication to connect to OEM exhaust or other manufacturers' products.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What material is this exhaust made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It's made from 304 natural stainless steel, mandrel bent and TIG-welded for great quality, performance, and affordability.\"}}, {\"@type\": \"Question\", \"name\": \"Which Corvette C6 model years does this fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This true dual exhaust fits 2005-2013 C6 Corvettes with 6.0L, 6.2L, or 7.0L V8 engines (LS2, LS3, LS7).\"}}, {\"@type\": \"Question\", \"name\": \"Will this work with a 4L60E transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. True Dual Exhaust does not work with early 4L60 transmissions. 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In order to make this axle-back a complete bolt-on kit, it requires Speed Engineering headers and x-pipe; axle-back will need fabrication to connect to OEM exhaust or other manufacturers' products.\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228173148208,"sku":"25-1063","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/25-1063C6CorvetteAxleBackExhaust.png?v=1711482836"},{"product_id":"speed-engineering-1997-2004-c5-corvette-1-7-8-longtube-headers-ls1-ls6","title":"Speed Engineering 1-7\/8\" Longtube Headers — 1997–2004 Chevrolet C5 Corvette LS1\/LS6 5.7L | 25-1034","description":"\u003cp\u003eThe factory exhaust manifolds on your C5 Corvette are one of the first restrictions holding back your LS1 or LS6. Speed Engineering's 1-7\/8\" longtube headers are a direct-fit, dyno-proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 25 rear-wheel horsepower over stock — with an improved ground clearance design that sets them apart from the competition, making them an especially strong choice for lowered C5 builds.\u003c\/p\u003e\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, merge spikes, and full TIG-welded construction.\u003c\/p\u003e\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRequires the use of a 2001–2004 oil dipstick tube\u003c\/li\u003e\n\u003cli\u003eRequires Speed Engineering's C5 Corvette X-pipe kit for proper installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-7\/8\" Port-Matched Primary Tubes\u003c\/strong\u003e — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector with Merge Spike\u003c\/strong\u003e — Optimized merge geometry for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Ground Clearance Over Competitors\u003c\/strong\u003e — Engineered with extra clearance, ideal for lowered C5 builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on LS1 and LS6 applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 5.7L LS1 and LS6 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C5 Corvette — Base \u0026amp; Z06 (RWD) 5.7L LS1\/LS6\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1997 Chevrolet Corvette Base \u0026amp; Z06 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1998 Chevrolet Corvette Base \u0026amp; Z06 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Chevrolet Corvette Base \u0026amp; Z06 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Corvette Base \u0026amp; Z06 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Corvette Base \u0026amp; Z06 (RWD) — 5.7L LS1\/LS6\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Corvette Base \u0026amp; Z06 (RWD) — 5.7L LS1\/LS6\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Corvette Base \u0026amp; Z06 (RWD) — 5.7L LS1\/LS6\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Corvette Base \u0026amp; Z06 (RWD) — 5.7L LS1\/LS6\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eHow much horsepower do these headers add to a C5 Corvette?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's 1-7\/8\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on LS1 and LS6 equipped 1997–2004 C5 Corvette applications compared to stock exhaust manifolds.\u003c\/p\u003e\u003ch5\u003eDo I need any additional parts to install these headers?\u003c\/h5\u003e\u003cp\u003eYes. These headers require the use of a 2001–2004 oil dipstick tube and Speed Engineering's C5 Corvette X-pipe kit for proper installation. Both items must be sourced before installation.\u003c\/p\u003e\u003ch5\u003eAre these headers good for lowered C5 Corvettes?\u003c\/h5\u003e\u003cp\u003eYes. Speed Engineering specifically engineered these headers with improved ground clearance compared to competitors, making them a strong choice for lowered C5 builds.\u003c\/p\u003e\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible with the 5.7L LS1 and LS6 engines found in 1997–2004 Chevrolet C5 Corvette Base and Z06 models.\u003c\/p\u003e\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\u003c\/p\u003e\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\u003cp\u003eYes. Standard graphite manifold gaskets are included with the headers.\u003c\/p\u003e\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How much horsepower do these headers add to a C5 Corvette?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Speed Engineering's 1-7\/8\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on LS1 and LS6 equipped 1997–2004 C5 Corvette applications compared to stock exhaust manifolds.\"}},{\"@type\":\"Question\",\"name\":\"Do I need any additional parts to install these headers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. 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Built from 3\" mandrel bent 304 natural stainless steel with TIG-welded construction and 3\" stainless band clamps included — a clean, direct-fit connection between your longtube headers and the existing axle-back on 1997–2004 C5 Corvette and C5 Z06 applications.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This X-pipe is designed to work with Speed Engineering longtube headers only. It is NOT compatible with factory exhaust manifolds.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue X-Pipe Design\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Stainless Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 5.7L LS1 and LS6 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C5 Corvette — LS1\/LS6\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1997 Chevrolet Corvette C5 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1998 Chevrolet Corvette C5 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e1999 Chevrolet Corvette C5 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Corvette C5 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Corvette C5 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Corvette C5 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Corvette C5 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Corvette C5 (RWD) — 5.7L LS1\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet C5 Corvette Z06 — LS6\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2001 Chevrolet Corvette C5 Z06 (RWD) — 5.7L LS6\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Corvette C5 Z06 (RWD) — 5.7L LS6\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Corvette C5 Z06 (RWD) — 5.7L LS6\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Corvette C5 Z06 (RWD) — 5.7L LS6\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this X-pipe work with my factory exhaust manifolds?\u003c\/h5\u003e\u003cp\u003eNo. This X-pipe is designed for use with Speed Engineering longtube headers only and is not compatible with factory exhaust manifolds.\u003c\/p\u003e\u003ch5\u003eWhat size tubing does this X-pipe use?\u003c\/h5\u003e\u003cp\u003e3\" diameter, mandrel bent for consistent flow throughout. 3\" stainless band clamps are included for installation.\u003c\/p\u003e\u003ch5\u003eDoes this fit the C5 Z06?\u003c\/h5\u003e\u003cp\u003eYes. This X-pipe fits both the standard C5 Corvette (LS1) and the C5 Z06 (LS6) through the 2004 model year.\u003c\/p\u003e\u003ch5\u003eWhat is the difference between this X-pipe and the C6 X-pipe kit?\u003c\/h5\u003e\u003cp\u003eThis kit is designed for the 1997–2004 C5 Corvette platform with LS1 and LS6 engines. The C6 platform uses a different chassis and exhaust routing — see the dedicated C6 X-pipe kit for those applications.\u003c\/p\u003e\u003ch5\u003eWhat material is this X-pipe made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\" stainless band clamps are included.\u003c\/p\u003e\u003ch5\u003eIs this X-pipe street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. 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Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228185862192,"sku":"25-1089","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1997_2004_C5_Corvette_X-Pipe_Kit_25-1089.png?v=1762209965"},{"product_id":"speed-engineering-2014-2019-silverado-sierra-suv-1-7-8-longtube-headers","title":"Speed Engineering 1-7\/8\" Longtube Headers — 2014–2018 Chevrolet Silverado \u0026 GMC Sierra 1500 \u0026 GM SUVs | 5.3L\/6.2L | 25-1037","description":"\u003cp\u003eThe factory exhaust manifolds on your K2XX Silverado, Sierra, or full-size SUV are one of the first restrictions holding back your LS engine. Speed Engineering's 1-7\/8\" longtube headers are a direct-fit, dyno-proven upgrade delivering over 25 rear-wheel horsepower over stock with improved throttle response and a deeper, more aggressive exhaust tone. Y-pipe sold separately and required for installation.\u003c\/p\u003e\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, merge spikes, CNC-machined flanges, and full TIG-welded construction. Standard graphite manifold gaskets included.\u003c\/p\u003e\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eY-pipe is compatible with 6 speed and 8 speed automatic transmissions\u003c\/strong\u003e — sold separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGM 2500\/3500 6.0L applications:\u003c\/strong\u003e Use the 2007–2013 GMT900 exhaust products instead\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-7\/8\" Primary Tubes with Merge Spikes\u003c\/strong\u003e — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on 5.3L and 6.2L applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 5.3L and 6.2L V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2014 Chevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2014 GMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2015 GMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 GMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 GMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 GMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Tahoe (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Yukon (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 GMC Yukon (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 GMC Yukon (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 GMC Yukon (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 GMC Yukon (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2019 GMC Yukon (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCadillac Escalade (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2019 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eIs a Y-pipe included with these headers?\u003c\/h5\u003e\u003cp\u003eNo. These are headers only. The Speed Engineering Y-pipe is sold separately and is required for proper installation. The Y-pipe is compatible with 6 speed and 8 speed automatic transmissions.\u003c\/p\u003e\u003ch5\u003eWill these fit a 2500 or 3500 with a 6.0L engine?\u003c\/h5\u003e\u003cp\u003eNo. GM 2500\/3500 6.0L applications require the 2007–2013 GMT900 exhaust products.\u003c\/p\u003e\u003ch5\u003eWhat is the difference between these headers and the 2014–2018 full kit (25-1037)?\u003c\/h5\u003e\u003cp\u003eThe full kit includes these headers plus the Speed Engineering Y-pipe, header bolts, and MLS exhaust gaskets. Choose the full kit for an all-in-one purchase; choose headers only if you already have or plan to source the Y-pipe separately.\u003c\/p\u003e\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's 1-7\/8\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 5.3L and 6.2L K2XX applications compared to stock exhaust manifolds.\u003c\/p\u003e\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\u003c\/p\u003e\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\u003cp\u003eYes. Standard graphite manifold gaskets are included.\u003c\/p\u003e\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Is a Y-pipe included with these headers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These are headers only. The Speed Engineering Y-pipe is sold separately and is required for proper installation. The Y-pipe is compatible with 6 speed and 8 speed automatic transmissions.\"}},{\"@type\":\"Question\",\"name\":\"Will these fit a 2500 or 3500 with a 6.0L engine?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. GM 2500\/3500 6.0L applications require the 2007–2013 GMT900 exhaust products.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between these headers and the 2014–2018 full kit (25-1037)?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The full kit includes these headers plus the Speed Engineering Y-pipe, header bolts, and MLS exhaust gaskets. Choose the full kit for an all-in-one purchase; choose headers only if you already have or plan to source the Y-pipe separately.\"}},{\"@type\":\"Question\",\"name\":\"How much horsepower do these headers add?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Speed Engineering's 1-7\/8\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 5.3L and 6.2L K2XX applications compared to stock exhaust manifolds.\"}},{\"@type\":\"Question\",\"name\":\"What material are these headers made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\"}},{\"@type\":\"Question\",\"name\":\"Are gaskets included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Standard graphite manifold gaskets are included.\"}},{\"@type\":\"Question\",\"name\":\"Are these headers street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228196675632,"sku":"25-1037","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2014_2019_Silverado_Sierra_SUV_1-7_8_Longtube_Headers_25-1037.png?v=1762210077"},{"product_id":"speed-engineering-2014-2019-silverado-sierra-suv-y-pipe-4-8l-5-3l-6-2l","title":"Speed Engineering Off-Road Y-Pipe — 2014–2019 Chevrolet Silverado \u0026 GMC Sierra \u0026 GM SUVs | 4.8L\/5.3L\/6.2L | 25-1038","description":"\u003cp\u003eConnecting your Speed Engineering longtube headers to the cat-back on your K2XX Silverado, Sierra, or full-size SUV? This is the Y-pipe that completes the system. Built from 3\" mandrel bent 304 natural stainless steel with a 3.5\" exit, an optional 3\" reducer, TIG-welded construction, and stainless band clamps included. An optional wideband O₂ bung is available for tuning applications. Compatible with 6 speed and 8 speed automatic transmissions.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This system is designed to work with Speed Engineering longtube headers only. It is NOT compatible with factory exhaust manifolds.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5\" Y-Pipe Exit with Optional 3\" Reducer\u003c\/strong\u003e — Flexibility to connect to standard 3\" cat-back systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wideband Tuning Bung\u003c\/strong\u003e — Available for wideband O₂ sensor placement for tuning applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6 Speed and 8 Speed Automatic Transmissions\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStainless Steel Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2014 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L ⚠️ Classic body style only\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2014 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2015 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2019 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.2L ⚠️ Classic body style only\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Tahoe (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Yukon \u0026amp; Yukon Denali (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 GMC Yukon\/Yukon Denali (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 GMC Yukon\/Yukon Denali (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 GMC Yukon\/Yukon Denali (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 GMC Yukon\/Yukon Denali (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2019 GMC Yukon\/Yukon Denali (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2020 GMC Yukon\/Yukon Denali (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCadillac Escalade (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2019 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2020 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this Y-pipe work with my factory exhaust manifolds?\u003c\/h5\u003e\u003cp\u003eNo. This Y-pipe is designed for use with Speed Engineering longtube headers only. It is not compatible with factory exhaust manifolds.\u003c\/p\u003e\u003ch5\u003eWhat transmissions does this Y-pipe work with?\u003c\/h5\u003e\u003cp\u003eThis Y-pipe is compatible with 6 speed and 8 speed automatic transmissions.\u003c\/p\u003e\u003ch5\u003eWhat is the exit diameter on this Y-pipe?\u003c\/h5\u003e\u003cp\u003eThis Y-pipe features a 3.5\" exit with an optional 3\" reducer available for connecting to standard 3\" cat-back systems.\u003c\/p\u003e\u003ch5\u003eIs a wideband O₂ bung included?\u003c\/h5\u003e\u003cp\u003eAn optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\u003c\/p\u003e\u003ch5\u003eDoes this fit the 2019 Silverado and Sierra?\u003c\/h5\u003e\u003cp\u003eYes, but Classic body style only. The 2019 model year saw both the outgoing K2XX Classic body and the new T1XX body. This Y-pipe fits the K2XX Classic body style only. For 2019+ T1XX body style trucks see part 25-1153.\u003c\/p\u003e\u003ch5\u003eWhat material is this Y-pipe made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. Stainless band clamps are included.\u003c\/p\u003e\u003ch5\u003eIs this Y-pipe street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this Y-pipe work with my factory exhaust manifolds?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This Y-pipe is designed for use with Speed Engineering longtube headers only. It is not compatible with factory exhaust manifolds.\"}},{\"@type\":\"Question\",\"name\":\"What transmissions does this Y-pipe work with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This Y-pipe is compatible with 6 speed and 8 speed automatic transmissions.\"}},{\"@type\":\"Question\",\"name\":\"What is the exit diameter on this Y-pipe?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This Y-pipe features a 3.5\\\" exit with an optional 3\\\" reducer available for connecting to standard 3\\\" cat-back systems.\"}},{\"@type\":\"Question\",\"name\":\"Is a wideband O₂ bung included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\"}},{\"@type\":\"Question\",\"name\":\"Does this fit the 2019 Silverado and Sierra?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, but Classic body style only. The 2019 model year saw both the outgoing K2XX Classic body and the new T1XX body. This Y-pipe fits the K2XX Classic body style only. For 2019+ T1XX body style trucks see part 25-1153.\"}},{\"@type\":\"Question\",\"name\":\"What material is this Y-pipe made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. Stainless band clamps are included.\"}},{\"@type\":\"Question\",\"name\":\"Is this Y-pipe street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228198838320,"sku":"25-1038","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2014_2019_Silverado_Sierra_SUV_Y-Pipe_4.8L_5.3L_6.2L_25-1038.png?v=1762210192"},{"product_id":"speed-engineering-2014-2018-silverado-sierra-tahoe-yukon-escalade-shorty-headers-5-3l-6-2l","title":"Speed Engineering Shorty Headers — 2014–2018 Chevrolet Silverado \u0026 GMC Sierra 1500 \u0026 GM SUVs | 5.3L\/6.2L | 25-1040","description":"\u003cp\u003eLooking for a direct-fit exhaust upgrade for your K2XX Silverado, Sierra, Tahoe, Yukon, or Escalade that drops right in where the factory manifolds were? Speed Engineering's 1-5\/8\" shorty headers are a mandrel bent, TIG-welded direct manifold replacement built from 304 natural stainless steel. Race version — no air or EGR fittings. Compatible with 5.3L and 6.2L applications. Dyno proven to deliver over 12 rear-wheel horsepower over stock manifolds.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e GM 2500\/3500 6.0L applications require the 2007–2013 GMT900 exhaust products.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5\/8\" Primary Tubes\u003c\/strong\u003e — Improved flow over stock cast iron manifolds on 5.3L and 6.2L applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5\" Collectors\u003c\/strong\u003e — Direct connection to factory exhaust system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace Version — No Air or EGR Fittings\u003c\/strong\u003e — Not compatible with emissions equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShorty Header Design\u003c\/strong\u003e — Direct manifold replacement for factory-correct fitment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter throughout; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the cylinder head for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 12+ RWHP gain on 5.3L and 6.2L applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 5.3L and 6.2L V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2014 Chevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Silverado 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2014 GMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2015 GMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 GMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 GMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 GMC Sierra 1500 (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Tahoe (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Tahoe (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Yukon \u0026amp; Yukon Denali (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 GMC Yukon\/Yukon Denali (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 GMC Yukon\/Yukon Denali (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 GMC Yukon\/Yukon Denali (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 GMC Yukon\/Yukon Denali (2WD\/4WD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCadillac Escalade (AWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Cadillac Escalade (AWD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Cadillac Escalade (AWD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Cadillac Escalade (AWD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Cadillac Escalade (AWD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCadillac Escalade EXT (AWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Cadillac Escalade EXT (AWD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Cadillac Escalade EXT (AWD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Cadillac Escalade EXT (AWD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Cadillac Escalade EXT (AWD) — 5.3L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat is the difference between these shorty headers and the 1-7\/8\" longtube headers (25-1037) for this platform?\u003c\/h5\u003e\u003cp\u003eShorty headers are a direct manifold replacement and connect to your existing factory exhaust system — no Y-pipe or additional exhaust components required. Longtube headers deliver more horsepower (25+ RWHP) and require a Y-pipe to complete the installation. Choose shorties for an easy bolt-on upgrade; choose longtubes for maximum performance.\u003c\/p\u003e\u003ch5\u003eDo these headers have air or EGR fittings?\u003c\/h5\u003e\u003cp\u003eNo. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.\u003c\/p\u003e\u003ch5\u003eWill these fit a 2500 or 3500 with a 6.0L engine?\u003c\/h5\u003e\u003cp\u003eNo. GM 2500\/3500 6.0L applications require the 2007–2013 GMT900 exhaust products.\u003c\/p\u003e\u003ch5\u003eDo these require any additional exhaust components?\u003c\/h5\u003e\u003cp\u003eNo. These are a direct manifold replacement and connect to your factory exhaust system without a Y-pipe or X-pipe.\u003c\/p\u003e\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's shorty headers are dyno proven to add over 12 rear-wheel horsepower on 5.3L and 6.2L applications compared to stock exhaust manifolds.\u003c\/p\u003e\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\u003cp\u003eYes. Standard graphite manifold gaskets are included.\u003c\/p\u003e\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the difference between these shorty headers and the 1-7\/8\\\" longtube headers (25-1037) for this platform?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Shorty headers are a direct manifold replacement and connect to your existing factory exhaust system — no Y-pipe or additional exhaust components required. Longtube headers deliver more horsepower (25+ RWHP) and require a Y-pipe to complete the installation. Choose shorties for an easy bolt-on upgrade; choose longtubes for maximum performance.\"}},{\"@type\":\"Question\",\"name\":\"Do these headers have air or EGR fittings?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.\"}},{\"@type\":\"Question\",\"name\":\"Will these fit a 2500 or 3500 with a 6.0L engine?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. GM 2500\/3500 6.0L applications require the 2007–2013 GMT900 exhaust products.\"}},{\"@type\":\"Question\",\"name\":\"Do these require any additional exhaust components?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These are a direct manifold replacement and connect to your factory exhaust system without a Y-pipe or X-pipe.\"}},{\"@type\":\"Question\",\"name\":\"How much horsepower do these headers add?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Speed Engineering's shorty headers are dyno proven to add over 12 rear-wheel horsepower on 5.3L and 6.2L applications compared to stock exhaust manifolds.\"}},{\"@type\":\"Question\",\"name\":\"What material are these headers made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\"}},{\"@type\":\"Question\",\"name\":\"Are gaskets included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Standard graphite manifold gaskets are included.\"}},{\"@type\":\"Question\",\"name\":\"Are these headers street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228201295920,"sku":"25-1040","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2014_2018_Silverado_Sierra_Tahoe_Yukon_Escalade_Shorty_Headers_5.3L_6.2L_25-1040.png?v=1762210319"},{"product_id":"speed-engineering-1999-2018-silverado-sierra-true-dual-x-pipe-system-universal","title":"Speed Engineering True Dual X-Pipe System — 1999–2018 Chevrolet Silverado \u0026 GMC Sierra | 4.8L\/5.3L\/6.0L\/6.2L | Universal | 25-1006 ETA 10\/30\/26","description":"\u003cp\u003eRunning Speed Engineering longtube headers on your Silverado or Sierra and need the crossover pipe that connects the two header collectors? Speed Engineering's true dual X-pipe system is that piece — built from 3\" mandrel bent 304 natural stainless steel with TIG-welded construction and 3\" stainless band clamps included. The X-pipe connects the driver and passenger side header collectors with a true crossover for improved exhaust pulse balancing and a deeper, more aggressive tone. Covers GMT800 (1999–2006), GMT900 (2007–2013), and K2XX (2014–2018) platform trucks. An optional wideband O₂ bung is available for tuning applications. Compatible with 4, 6, and 8 speed automatic transmissions.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This system is designed to work with Speed Engineering longtube headers only. It is NOT compatible with factory exhaust equipment.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Dual X-Pipe Design\u003c\/strong\u003e — Connects both header collectors with a crossover for improved exhaust pulse balancing and tone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wideband O₂ Bung\u003c\/strong\u003e — Available for wideband sensor placement for tuning applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4, 6, and 8 Speed Automatic Transmissions\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Stainless Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUniversal Fit — Covers GMT800, GMT900, and K2XX Silverado\/Sierra Platforms\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, and 6.2L V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ New body style only — NOT Classic\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1999 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2000 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2001 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2002 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2003 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2004 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2005 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2006 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2007 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ New body style only — NOT Classic\u003c\/li\u003e\n\u003cli\u003e2008 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2014 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2015 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this system work with my factory exhaust manifolds?\u003c\/h5\u003e\u003cp\u003eNo. This X-pipe is designed for use with Speed Engineering longtube headers only. It is not compatible with factory exhaust equipment of any kind.\u003c\/p\u003e\u003ch5\u003eWhat is the difference between this X-pipe system and the Speed Engineering Y-pipe?\u003c\/h5\u003e\u003cp\u003eThe Y-pipe merges both header collectors into a single outlet for connection to a single cat-back system. The true dual X-pipe connects the two header collectors with a crossover for improved exhaust pulse balancing — it is not a full exhaust system and does not connect to a cat-back. Choose the Y-pipe for a single cat-back setup; choose the X-pipe for improved tone and flow balance between the two exhaust banks.\u003c\/p\u003e\u003ch5\u003eWhat transmissions does this system work with?\u003c\/h5\u003e\u003cp\u003eThis X-pipe is compatible with 4, 6, and 8 speed automatic transmissions across the 1999–2018 Silverado and Sierra platform range.\u003c\/p\u003e\u003ch5\u003eIs a wideband O₂ bung included?\u003c\/h5\u003e\u003cp\u003eAn optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\u003c\/p\u003e\u003ch5\u003eDoes this fit both GMT800 and GMT900 trucks?\u003c\/h5\u003e\u003cp\u003eYes. This universal X-pipe covers GMT800 (1999–2006), GMT900 (2007–2013), and K2XX (2014–2018) Silverado and Sierra 1500 applications. Note that 2007 model year trucks must be the new body style only — the 2007 Classic (carry-over GMT800) is not covered under the GMT900 range.\u003c\/p\u003e\u003ch5\u003eWhat material is this X-pipe made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\" stainless band clamps are included.\u003c\/p\u003e\u003ch5\u003eIs this X-pipe street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this system work with my factory exhaust manifolds?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This X-pipe is designed for use with Speed Engineering longtube headers only. It is not compatible with factory exhaust equipment of any kind.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between this X-pipe system and the Speed Engineering Y-pipe?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The Y-pipe merges both header collectors into a single outlet for connection to a single cat-back system. The true dual X-pipe connects the two header collectors with a crossover for improved exhaust pulse balancing — it is not a full exhaust system and does not connect to a cat-back. Choose the Y-pipe for a single cat-back setup; choose the X-pipe for improved tone and flow balance between the two exhaust banks.\"}},{\"@type\":\"Question\",\"name\":\"What transmissions does this system work with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This X-pipe is compatible with 4, 6, and 8 speed automatic transmissions across the 1999–2018 Silverado and Sierra platform range.\"}},{\"@type\":\"Question\",\"name\":\"Is a wideband O₂ bung included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\"}},{\"@type\":\"Question\",\"name\":\"Does this fit both GMT800 and GMT900 trucks?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. This universal X-pipe covers GMT800 (1999–2006), GMT900 (2007–2013), and K2XX (2014–2018) Silverado and Sierra 1500 applications. Note that 2007 model year trucks must be the new body style only — the 2007 Classic (carry-over GMT800) is not covered under the GMT900 range.\"}},{\"@type\":\"Question\",\"name\":\"What material is this X-pipe made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\\\" stainless band clamps are included.\"}},{\"@type\":\"Question\",\"name\":\"Is this X-pipe street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228204572720,"sku":"25-1006","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1999_2018_Silverado_Sierra_True_Dual_X-Pipe_System_Universal_25-1006.png?v=1762210449"},{"product_id":"speed-engineering-1999-2019-silverado-sierra-true-dual-exhaust-system-single-cab-axle-exit","title":"Speed Engineering True Dual Exhaust System — 1999–2018 Chevrolet Silverado \u0026 GMC Sierra | Single Cab, Short Bed Axle Exit | 25-1006 ETA 10\/30\/26","description":"\u003cp\u003eLooking to complete your true dual exhaust build on your Silverado or Sierra with an axle-exit system that connects to factory hanger locations? Speed Engineering's true dual exhaust system is built from 3\" mandrel bent 304 natural stainless steel with insulated bullet style blow-through mufflers, a true dual X-pipe crossover, and 3\" stainless band clamps included. Designed for 1999–2018 single cab, short bed trucks (119\" wheelbase) and connects directly to factory hanger locations, exiting at the rear axle for a clean, tucked profile. An optional wideband O₂ bung is available for tuning applications. Compatible with 4, 6, and 8 speed automatic transmissions.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This system is designed to work with Speed Engineering 1999–2018 truck and SUV longtube headers only. It is NOT designed to work with any factory exhaust equipment.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent 3\" Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Dual X-Pipe System\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulated Bullet Style Blow-Through Mufflers\u003c\/strong\u003e — Deep, aggressive exhaust tone with straight-through flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle Exit Design\u003c\/strong\u003e — Clean, tucked exit at the rear axle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnects to Factory Hanger Locations\u003c\/strong\u003e — No custom hanger fabrication required on single cab, short bed trucks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wideband O₂ Bung\u003c\/strong\u003e — Available for wideband sensor placement for tuning applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Stainless Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4, 6, and 8 Speed Automatic Transmissions\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, and 6.2L V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003ePrimary fit: Single Cab, Short Bed (119\" wheelbase) — 1999–2018.\u003c\/strong\u003e Will fit longer bed options by extending connection pipes.\u003c\/p\u003e\u003c\/blockquote\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD) — Single Cab, Short Bed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — Single Cab, Short Bed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1999 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2000 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2001 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2002 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2003 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2004 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2005 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2006 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2007 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2008 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2009 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2010 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2011 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2012 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2013 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2014 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2015 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2016 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2017 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2018 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eWheelbase Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This system has also been used on SUV and other GM truck wheelbase applications. These require lengthening, shortening, and hanger relocation modifications by the installer.\u003c\/p\u003e\u003c\/blockquote\u003e\u003cp\u003e\u003cstrong\u003e1999–2018 GM Truck (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e119\" — Reg Cab, Short Bed (primary fit, no modification)\u003c\/li\u003e\n\u003cli\u003e133\" — Reg Cab, Long Bed (order Ext\/Crew Cab kit and modify)\u003c\/li\u003e\n\u003cli\u003e143.5\" — Crew Cab 5'8\" Short Bed \u0026amp; Extra Cab 6' Short Bed (fits with this kit)\u003c\/li\u003e\n\u003cli\u003e153\" — Crew Cab, Reg Bed (order and modify part 25-1003)\u003c\/li\u003e\n\u003cli\u003e157.5\" — Ext Cab, Long Bed (order and modify part 25-1003)\u003c\/li\u003e\n\u003cli\u003e167\" — Crew Cab, Long Bed (order and modify part 25-1005)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003e1999–2018 GM SUV (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e116\" — Order and modify Reg Cab kit\u003c\/li\u003e\n\u003cli\u003e130\" (XL) — Order and modify Ext\/Crew Cab kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003e2002–2013 Chevrolet Avalanche (EXT)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e130\" — Order and modify Ext\/Crew Cab kit\u003c\/li\u003e\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this system work with my factory exhaust manifolds?\u003c\/h5\u003e\u003cp\u003eNo. This system is designed to work with Speed Engineering 1999–2018 truck and SUV longtube headers only. It is not designed to work with any factory exhaust equipment.\u003c\/p\u003e\u003ch5\u003eWhat is the difference between this system and the single cab rear-exit system (25-1006)?\u003c\/h5\u003e\u003cp\u003eBoth are designed for the same 1999–2018 single cab, short bed trucks (119\" wheelbase). This system exits at the rear axle for a cleaner, more tucked profile and uses insulated bullet style mufflers. The rear-exit version exits further back and uses full size insulated blow-through mufflers. Choose based on your preferred exit location and muffler style.\u003c\/p\u003e\u003ch5\u003eWhat wheelbase does this system fit without modification?\u003c\/h5\u003e\u003cp\u003eThis system is designed for single cab, short bed trucks with a 119\" wheelbase and connects directly to factory hanger locations. It also fits 143.5\" wheelbase Crew Cab 5'8\" Short Bed and Extra Cab 6' Short Bed configurations.\u003c\/p\u003e\u003ch5\u003eWill this fit my Crew Cab or longer bed truck?\u003c\/h5\u003e\u003cp\u003eIt depends on your wheelbase. Some configurations fit this kit directly, while others require ordering additional parts (25-1003 or 25-1005) and modifying the connection pipes, hangers, and overall length. See the wheelbase compatibility chart for your specific configuration.\u003c\/p\u003e\u003ch5\u003eWill this fit my Tahoe, Yukon, or Suburban?\u003c\/h5\u003e\u003cp\u003eThis system has been used on SUV applications but requires lengthening, shortening, and hanger relocation modifications by the installer. It is not a direct, unmodified fit for SUVs.\u003c\/p\u003e\u003ch5\u003eWhat transmissions does this system work with?\u003c\/h5\u003e\u003cp\u003eThis system is compatible with 4, 6, and 8 speed automatic transmissions.\u003c\/p\u003e\u003ch5\u003eIs a wideband O₂ bung included?\u003c\/h5\u003e\u003cp\u003eAn optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\u003c\/p\u003e\u003ch5\u003eWhat mufflers does this system use?\u003c\/h5\u003e\u003cp\u003eInsulated bullet style blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\u003c\/p\u003e\u003ch5\u003eWhat material is this system made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\" stainless band clamps are included.\u003c\/p\u003e\u003ch5\u003eIs this system street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this system work with my factory exhaust manifolds?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This system is designed to work with Speed Engineering 1999–2018 truck and SUV longtube headers only. It is not designed to work with any factory exhaust equipment.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between this system and the single cab rear-exit system (25-1006)?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Both are designed for the same 1999–2018 single cab, short bed trucks (119\\\" wheelbase). This system exits at the rear axle for a cleaner, more tucked profile and uses insulated bullet style mufflers. The rear-exit version exits further back and uses full size insulated blow-through mufflers. Choose based on your preferred exit location and muffler style.\"}},{\"@type\":\"Question\",\"name\":\"What wheelbase does this system fit without modification?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This system is designed for single cab, short bed trucks with a 119\\\" wheelbase and connects directly to factory hanger locations. It also fits 143.5\\\" wheelbase Crew Cab 5'8\\\" Short Bed and Extra Cab 6' Short Bed configurations.\"}},{\"@type\":\"Question\",\"name\":\"Will this fit my Crew Cab or longer bed truck?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It depends on your wheelbase. Some configurations fit this kit directly, while others require ordering additional parts (25-1003 or 25-1005) and modifying the connection pipes, hangers, and overall length. See the wheelbase compatibility chart for your specific configuration.\"}},{\"@type\":\"Question\",\"name\":\"Will this fit my Tahoe, Yukon, or Suburban?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This system has been used on SUV applications but requires lengthening, shortening, and hanger relocation modifications by the installer. It is not a direct, unmodified fit for SUVs.\"}},{\"@type\":\"Question\",\"name\":\"What transmissions does this system work with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This system is compatible with 4, 6, and 8 speed automatic transmissions.\"}},{\"@type\":\"Question\",\"name\":\"Is a wideband O₂ bung included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\"}},{\"@type\":\"Question\",\"name\":\"What mufflers does this system use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Insulated bullet style blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\"}},{\"@type\":\"Question\",\"name\":\"What material is this system made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\\\" stainless band clamps are included.\"}},{\"@type\":\"Question\",\"name\":\"Is this system street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228206637104,"sku":"25-1006","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1999_2019_Silverado_Sierra_True_Dual_Exhaust_System_Single_Cab_Axle_Exit_25-1006.png?v=1762210741"},{"product_id":"speed-engineering-2007-2019-silverado-sierra-true-dual-exhaust-system-crew-extra-cab-rear-exit","title":"Speed Engineering True Dual Exhaust System — 2007–2018 Chevrolet Silverado \u0026 GMC Sierra | Crew Cab \u0026 Extra Cab Rear Exit | 25-1006 ETA 10\/30\/26","description":"\u003cp\u003eLooking to complete your true dual exhaust build on your GMT900 or K2XX Silverado or Sierra Crew Cab or Extra Cab with a system that connects to factory hanger locations? Speed Engineering's true dual exhaust system is built from 3\" mandrel bent 304 natural stainless steel with full size insulated blow-through mufflers, a true dual X-pipe crossover, and 3\" stainless band clamps included. Designed for 2007–2018 Crew Cab 5'8\" Short Bed and Extra Cab 6' Short Bed trucks (143.5\" wheelbase) and connects directly to factory hanger locations, exiting at the rear of the vehicle for an aggressive look and tone. An optional wideband O₂ bung is available for tuning applications. Compatible with 4, 6, and 8 speed automatic transmissions.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This system is designed to work with Speed Engineering 2007–2018 truck and SUV longtube headers only. It is NOT designed to work with any factory exhaust equipment.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent 3\" Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Dual X-Pipe System\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Size Insulated Blow-Through Mufflers\u003c\/strong\u003e — Deep, aggressive exhaust tone with straight-through flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear Exit Design\u003c\/strong\u003e — Exits at the rear of the vehicle for an aggressive appearance and tone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnects to Factory Hanger Locations\u003c\/strong\u003e — No custom hanger fabrication required on Crew Cab\/Extra Cab Short Bed trucks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wideband O₂ Bung\u003c\/strong\u003e — Available for wideband sensor placement for tuning applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Stainless Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4, 6, and 8 Speed Automatic Transmissions\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, and 6.2L V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003ePrimary fit: Crew Cab 5'8\" Short Bed \u0026amp; Extra Cab 6' Short Bed (143.5\" wheelbase) — 2007–2018.\u003c\/strong\u003e Will fit longer bed options by extending connection pipes.\u003c\/p\u003e\u003c\/blockquote\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD) — Crew Cab Short Bed \/ Extra Cab Short Bed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed ⚠️ New body style only — NOT Classic\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — Crew Cab Short Bed \/ Extra Cab Short Bed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2007 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed ⚠️ New body style only — NOT Classic\u003c\/li\u003e\n\u003cli\u003e2008 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2009 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2010 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2011 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2012 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2013 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2014 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2015 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2016 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2017 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2018 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eWheelbase Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This system has also been used on SUV and other GM truck wheelbase applications. These require lengthening, shortening, and hanger relocation modifications by the installer.\u003c\/p\u003e\u003c\/blockquote\u003e\u003cp\u003e\u003cstrong\u003eGM Truck (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e119\" — Reg Cab, Short Bed (order and modify Reg Cab kit)\u003c\/li\u003e\n\u003cli\u003e133\" — Reg Cab, Long Bed (order Ext\/Crew Cab kit and modify)\u003c\/li\u003e\n\u003cli\u003e143.5\" — Crew Cab 5'8\" Short Bed \u0026amp; Extra Cab 6' Short Bed (primary fit, no modification)\u003c\/li\u003e\n\u003cli\u003e153\" — Crew Cab, Reg Bed (order and modify part 25-1003)\u003c\/li\u003e\n\u003cli\u003e157.5\" — Ext Cab, Long Bed (order and modify part 25-1003)\u003c\/li\u003e\n\u003cli\u003e167\" — Crew Cab, Long Bed (order and modify part 25-1005)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGM SUV (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e116\" — Order and modify Reg Cab kit\u003c\/li\u003e\n\u003cli\u003e130\" (XL) — Order and modify this kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003e2002–2013 Chevrolet Avalanche (EXT)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e130\" — Order and modify this kit\u003c\/li\u003e\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this system work with my factory exhaust manifolds?\u003c\/h5\u003e\u003cp\u003eNo. This system is designed to work with Speed Engineering 2007–2018 truck and SUV longtube headers only. It is not designed to work with any factory exhaust equipment.\u003c\/p\u003e\u003ch5\u003eWhat is the difference between this system and the 1999–2006 Crew\/Extra Cab rear-exit system (25-1006)?\u003c\/h5\u003e\u003cp\u003eBoth share the same cab configuration (Crew Cab 5'8\" Short Bed and Extra Cab 6' Short Bed, 143.5\" wheelbase) and use full size insulated blow-through mufflers with a rear-exit design. This version is built for the 2007–2018 GMT900\/K2XX longtube headers, while the earlier version is built for 1999–2006 GMT800 longtube headers. Make sure to select the version that matches your truck's generation and header set.\u003c\/p\u003e\u003ch5\u003eWill this fit the 2007 Classic Silverado or Sierra?\u003c\/h5\u003e\u003cp\u003eNo. This system is for the 2007 new body style (GMT900) only. 2007 Classic (GMT800 carry-over) owners should use the 1999–2006 Crew\/Extra Cab rear-exit system instead.\u003c\/p\u003e\u003ch5\u003eWhat wheelbase does this system fit without modification?\u003c\/h5\u003e\u003cp\u003eThis system is designed for Crew Cab 5'8\" Short Bed and Extra Cab 6' Short Bed trucks with a 143.5\" wheelbase and connects directly to factory hanger locations.\u003c\/p\u003e\u003ch5\u003eWill this fit my Reg Cab Short Bed truck?\u003c\/h5\u003e\u003cp\u003eNot without modification. Reg Cab Short Bed (119\" wheelbase) trucks require ordering and modifying the Reg Cab kit.\u003c\/p\u003e\u003ch5\u003eWill this fit my Tahoe, Yukon, or Suburban?\u003c\/h5\u003e\u003cp\u003eThis system has been used on SUV applications but requires lengthening, shortening, and hanger relocation modifications by the installer. It is not a direct, unmodified fit for SUVs.\u003c\/p\u003e\u003ch5\u003eWhat transmissions does this system work with?\u003c\/h5\u003e\u003cp\u003eThis system is compatible with 4, 6, and 8 speed automatic transmissions.\u003c\/p\u003e\u003ch5\u003eIs a wideband O₂ bung included?\u003c\/h5\u003e\u003cp\u003eAn optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\u003c\/p\u003e\u003ch5\u003eWhat mufflers does this system use?\u003c\/h5\u003e\u003cp\u003eFull size insulated blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\u003c\/p\u003e\u003ch5\u003eWhat material is this system made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\" stainless band clamps are included.\u003c\/p\u003e\u003ch5\u003eIs this system street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. 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This version is built for the 2007–2018 GMT900\/K2XX longtube headers, while the earlier version is built for 1999–2006 GMT800 longtube headers. 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Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. 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Speed Engineering's true dual exhaust system is built from 3\" mandrel bent 304 natural stainless steel with insulated bullet style blow-through mufflers, a true dual X-pipe crossover, and 3\" stainless band clamps included. Designed for 2007–2018 Crew Cab 5'8\" Short Bed and Extra Cab 6' Short Bed trucks (143.5\" wheelbase) and connects directly to factory hanger locations, exiting at the rear axle for a clean, tucked profile. An optional wideband O₂ bung is available for tuning applications. Compatible with 4, 6, and 8 speed automatic transmissions.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This system is designed to work with Speed Engineering 2007–2018 truck and SUV longtube headers only. It is NOT designed to work with any factory exhaust equipment.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent 3\" Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Dual X-Pipe System\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulated Bullet Style Blow-Through Mufflers\u003c\/strong\u003e — Deep, aggressive exhaust tone with straight-through flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle Exit Design\u003c\/strong\u003e — Clean, tucked exit at the rear axle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnects to Factory Hanger Locations\u003c\/strong\u003e — No custom hanger fabrication required on Crew Cab\/Extra Cab Short Bed trucks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wideband O₂ Bung\u003c\/strong\u003e — Available for wideband sensor placement for tuning applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Stainless Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4, 6, and 8 Speed Automatic Transmissions\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, and 6.2L V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003ePrimary fit: Crew Cab 5'8\" Short Bed \u0026amp; Extra Cab 6' Short Bed (143.5\" wheelbase) — 2007–2018.\u003c\/strong\u003e Will fit longer bed options by extending connection pipes.\u003c\/p\u003e\u003c\/blockquote\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD) — Crew Cab Short Bed \/ Extra Cab Short Bed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed ⚠️ New body style only — NOT Classic\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — Crew Cab Short Bed \/ Extra Cab Short Bed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2007 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed ⚠️ New body style only — NOT Classic\u003c\/li\u003e\n\u003cli\u003e2008 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2009 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2010 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2011 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2012 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2013 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2014 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2015 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2016 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2017 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003cli\u003e2018 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Crew Cab 5'8\" Short Bed \/ Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eWheelbase Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This system has also been used on SUV and other GM truck wheelbase applications. These require lengthening, shortening, and hanger relocation modifications by the installer.\u003c\/p\u003e\u003c\/blockquote\u003e\u003cp\u003e\u003cstrong\u003eGM Truck (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e119\" — Reg Cab, Short Bed (order and modify Reg Cab kit)\u003c\/li\u003e\n\u003cli\u003e133\" — Reg Cab, Long Bed (order Ext\/Crew Cab kit and modify)\u003c\/li\u003e\n\u003cli\u003e143.5\" — Crew Cab 5'8\" Short Bed \u0026amp; Extra Cab 6' Short Bed (primary fit, no modification)\u003c\/li\u003e\n\u003cli\u003e153\" — Crew Cab, Reg Bed (order and modify part 25-1003)\u003c\/li\u003e\n\u003cli\u003e157.5\" — Ext Cab, Long Bed (order and modify part 25-1003)\u003c\/li\u003e\n\u003cli\u003e167\" — Crew Cab, Long Bed (order and modify part 25-1005)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGM SUV (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e116\" — Order and modify Reg Cab kit\u003c\/li\u003e\n\u003cli\u003e130\" (XL) — Order and modify this kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003e2002–2013 Chevrolet Avalanche (EXT)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e130\" — Order and modify this kit\u003c\/li\u003e\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this system work with my factory exhaust manifolds?\u003c\/h5\u003e\u003cp\u003eNo. This system is designed to work with Speed Engineering 2007–2018 truck and SUV longtube headers only. It is not designed to work with any factory exhaust equipment.\u003c\/p\u003e\u003ch5\u003eWhat is the difference between this system and the 2007–2018 Crew\/Extra Cab rear-exit system (25-1006)?\u003c\/h5\u003e\u003cp\u003eBoth share the same cab configuration (Crew Cab 5'8\" Short Bed and Extra Cab 6' Short Bed, 143.5\" wheelbase). This system exits at the rear axle for a cleaner, more tucked profile and uses insulated bullet style mufflers. The rear-exit version exits further back and uses full size insulated blow-through mufflers.\u003c\/p\u003e\u003ch5\u003eWhat is the difference between this system and the 1999–2006 Crew\/Extra Cab axle-exit system (25-1006)?\u003c\/h5\u003e\u003cp\u003eBoth share the same cab configuration and axle-exit design with insulated bullet style mufflers. This version is built for 2007–2018 GMT900\/K2XX longtube headers, while the earlier version is built for 1999–2006 GMT800 longtube headers. Select the version matching your truck's generation.\u003c\/p\u003e\u003ch5\u003eWill this fit the 2007 Classic Silverado or Sierra?\u003c\/h5\u003e\u003cp\u003eNo. This system is for the 2007 new body style (GMT900) only. 2007 Classic owners should use the 1999–2006 Crew\/Extra Cab axle-exit system instead.\u003c\/p\u003e\u003ch5\u003eWill this fit my Reg Cab Short Bed truck?\u003c\/h5\u003e\u003cp\u003eNot without modification. Reg Cab Short Bed (119\" wheelbase) trucks require ordering and modifying the Reg Cab kit.\u003c\/p\u003e\u003ch5\u003eWill this fit my Tahoe, Yukon, or Suburban?\u003c\/h5\u003e\u003cp\u003eThis system has been used on SUV applications but requires lengthening, shortening, and hanger relocation modifications by the installer.\u003c\/p\u003e\u003ch5\u003eWhat transmissions does this system work with?\u003c\/h5\u003e\u003cp\u003eThis system is compatible with 4, 6, and 8 speed automatic transmissions.\u003c\/p\u003e\u003ch5\u003eIs a wideband O₂ bung included?\u003c\/h5\u003e\u003cp\u003eAn optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\u003c\/p\u003e\u003ch5\u003eWhat mufflers does this system use?\u003c\/h5\u003e\u003cp\u003eInsulated bullet style blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\u003c\/p\u003e\u003ch5\u003eWhat material is this system made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\" stainless band clamps are included.\u003c\/p\u003e\u003ch5\u003eIs this system street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this system work with my factory exhaust manifolds?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This system is designed to work with Speed Engineering 2007–2018 truck and SUV longtube headers only. It is not designed to work with any factory exhaust equipment.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between this system and the 2007–2018 Crew\/Extra Cab rear-exit system (25-1006)?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Both share the same cab configuration (Crew Cab 5'8\\\" Short Bed and Extra Cab 6' Short Bed, 143.5\\\" wheelbase). This system exits at the rear axle for a cleaner, more tucked profile and uses insulated bullet style mufflers. The rear-exit version exits further back and uses full size insulated blow-through mufflers.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between this system and the 1999–2006 Crew\/Extra Cab axle-exit system (25-1006)?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Both share the same cab configuration and axle-exit design with insulated bullet style mufflers. This version is built for 2007–2018 GMT900\/K2XX longtube headers, while the earlier version is built for 1999–2006 GMT800 longtube headers. Select the version matching your truck's generation.\"}},{\"@type\":\"Question\",\"name\":\"Will this fit the 2007 Classic Silverado or Sierra?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This system is for the 2007 new body style (GMT900) only. 2007 Classic owners should use the 1999–2006 Crew\/Extra Cab axle-exit system instead.\"}},{\"@type\":\"Question\",\"name\":\"Will this fit my Reg Cab Short Bed truck?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not without modification. Reg Cab Short Bed (119\\\" wheelbase) trucks require ordering and modifying the Reg Cab kit.\"}},{\"@type\":\"Question\",\"name\":\"Will this fit my Tahoe, Yukon, or Suburban?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This system has been used on SUV applications but requires lengthening, shortening, and hanger relocation modifications by the installer.\"}},{\"@type\":\"Question\",\"name\":\"What transmissions does this system work with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This system is compatible with 4, 6, and 8 speed automatic transmissions.\"}},{\"@type\":\"Question\",\"name\":\"Is a wideband O₂ bung included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\"}},{\"@type\":\"Question\",\"name\":\"What mufflers does this system use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Insulated bullet style blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\"}},{\"@type\":\"Question\",\"name\":\"What material is this system made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\\\" stainless band clamps are included.\"}},{\"@type\":\"Question\",\"name\":\"Is this system street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228220432432,"sku":"25-1006","price":614.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2007_2019_Silverado_Sierra_True_Dual_Exhaust_System_Crew_Extra_Cab_Axle_Exit_25-1006.png?v=1762211019"},{"product_id":"speed-engineering-1999-2019-silverado-sierra-true-dual-exhaust-system-single-cab-rear-exit","title":"Speed Engineering True Dual Exhaust System — 1999–2018 Chevrolet Silverado \u0026 GMC Sierra | Single Cab, Short Bed Rear Exit | 25-1006 ETA 10\/30\/26","description":"\u003cp\u003eLooking to complete your true dual exhaust build on your Silverado or Sierra with a system that connects to factory hanger locations? Speed Engineering's true dual exhaust system is built from 3\" mandrel bent 304 natural stainless steel with full size insulated blow-through mufflers, a true dual X-pipe crossover, and 3\" stainless band clamps included. Designed for 1999–2018 single cab, short bed trucks (119\" wheelbase) and connects directly to factory hanger locations. An optional wideband O₂ bung is available for tuning applications. Compatible with 4, 6, and 8 speed automatic transmissions.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e This system is designed to work with Speed Engineering 1999–2018 truck and SUV longtube headers only. It is NOT designed to work with any factory exhaust equipment.\u003c\/p\u003e\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent 3\" Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Dual X-Pipe System\u003c\/strong\u003e — Balances exhaust pulses between banks for improved tone and mid-range power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Size Insulated Blow-Through Mufflers\u003c\/strong\u003e — Deep, aggressive exhaust tone with straight-through flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnects to Factory Hanger Locations\u003c\/strong\u003e — No custom hanger fabrication required on single cab, short bed trucks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wideband O₂ Bung\u003c\/strong\u003e — Available for wideband sensor placement for tuning applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\" Stainless Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4, 6, and 8 Speed Automatic Transmissions\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, and 6.2L V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003ePrimary fit: Single Cab, Short Bed (119\" wheelbase) — 1999–2018.\u003c\/strong\u003e Will fit longer bed options by extending connection pipes.\u003c\/p\u003e\u003c\/blockquote\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD) — Single Cab, Short Bed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed ⚠️ New body style only — NOT Classic\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — Single Cab, Short Bed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1999 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2000 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2001 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2002 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2003 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2004 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2005 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2006 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2007 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2008 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2009 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2010 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2011 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2012 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2013 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2014 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2015 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2016 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2017 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003cli\u003e2018 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L — Single Cab, Short Bed\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eWheelbase Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This system has also been used on SUV and other GM truck wheelbase applications. These require lengthening, shortening, and hanger relocation modifications by the installer.\u003c\/p\u003e\u003c\/blockquote\u003e\u003cp\u003e\u003cstrong\u003e1999–2018 GM Truck (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e119\" — Reg Cab, Short Bed (primary fit, no modification)\u003c\/li\u003e\n\u003cli\u003e133\" — Reg Cab, Long Bed (order Ext\/Crew Cab kit and modify)\u003c\/li\u003e\n\u003cli\u003e143.5\" — Crew Cab 5'8\" Short Bed \u0026amp; Extra Cab 6' Short Bed (fits with this kit)\u003c\/li\u003e\n\u003cli\u003e153\" — Crew Cab, Reg Bed (order and modify part 25-1003)\u003c\/li\u003e\n\u003cli\u003e157.5\" — Ext Cab, Long Bed (order and modify part 25-1003)\u003c\/li\u003e\n\u003cli\u003e167\" — Crew Cab, Long Bed (order and modify part 25-1005)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003e1999–2018 GM SUV (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e116\" — Order and modify Reg Cab kit\u003c\/li\u003e\n\u003cli\u003e130\" (XL) — Order and modify Ext\/Crew Cab kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003e2002–2013 Chevrolet Avalanche (EXT)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e130\" — Order and modify Ext\/Crew Cab kit\u003c\/li\u003e\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWill this system work with my factory exhaust manifolds?\u003c\/h5\u003e\u003cp\u003eNo. This system is designed to work with Speed Engineering 1999–2018 truck and SUV longtube headers only. It is not designed to work with any factory exhaust equipment.\u003c\/p\u003e\u003ch5\u003eWhat wheelbase does this system fit without modification?\u003c\/h5\u003e\u003cp\u003eThis system is designed for single cab, short bed trucks with a 119\" wheelbase and connects directly to factory hanger locations. It also fits 143.5\" wheelbase Crew Cab 5'8\" Short Bed and Extra Cab 6' Short Bed configurations.\u003c\/p\u003e\u003ch5\u003eWill this fit my Crew Cab or longer bed truck?\u003c\/h5\u003e\u003cp\u003eIt depends on your wheelbase. Some configurations fit this kit directly, while others require ordering additional parts (25-1003 or 25-1005) and modifying the connection pipes, hangers, and overall length. See the wheelbase compatibility chart for your specific configuration.\u003c\/p\u003e\u003ch5\u003eWill this fit my Tahoe, Yukon, or Suburban?\u003c\/h5\u003e\u003cp\u003eThis system has been used on SUV applications but requires lengthening, shortening, and hanger relocation modifications by the installer. It is not a direct, unmodified fit for SUVs.\u003c\/p\u003e\u003ch5\u003eWhat transmissions does this system work with?\u003c\/h5\u003e\u003cp\u003eThis system is compatible with 4, 6, and 8 speed automatic transmissions.\u003c\/p\u003e\u003ch5\u003eIs a wideband O₂ bung included?\u003c\/h5\u003e\u003cp\u003eAn optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\u003c\/p\u003e\u003ch5\u003eWhat mufflers does this system use?\u003c\/h5\u003e\u003cp\u003eFull size insulated blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\u003c\/p\u003e\u003ch5\u003eWhat material is this system made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\" stainless band clamps are included.\u003c\/p\u003e\u003ch5\u003eIs this system street legal?\u003c\/h5\u003e\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this system work with my factory exhaust manifolds?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This system is designed to work with Speed Engineering 1999–2018 truck and SUV longtube headers only. It is not designed to work with any factory exhaust equipment.\"}},{\"@type\":\"Question\",\"name\":\"What wheelbase does this system fit without modification?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This system is designed for single cab, short bed trucks with a 119\\\" wheelbase and connects directly to factory hanger locations. It also fits 143.5\\\" wheelbase Crew Cab 5'8\\\" Short Bed and Extra Cab 6' Short Bed configurations.\"}},{\"@type\":\"Question\",\"name\":\"Will this fit my Crew Cab or longer bed truck?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It depends on your wheelbase. Some configurations fit this kit directly, while others require ordering additional parts (25-1003 or 25-1005) and modifying the connection pipes, hangers, and overall length. See the wheelbase compatibility chart for your specific configuration.\"}},{\"@type\":\"Question\",\"name\":\"Will this fit my Tahoe, Yukon, or Suburban?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This system has been used on SUV applications but requires lengthening, shortening, and hanger relocation modifications by the installer. It is not a direct, unmodified fit for SUVs.\"}},{\"@type\":\"Question\",\"name\":\"What transmissions does this system work with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This system is compatible with 4, 6, and 8 speed automatic transmissions.\"}},{\"@type\":\"Question\",\"name\":\"Is a wideband O₂ bung included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\"}},{\"@type\":\"Question\",\"name\":\"What mufflers does this system use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Full size insulated blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.\"}},{\"@type\":\"Question\",\"name\":\"What material is this system made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3\\\" stainless band clamps are included.\"}},{\"@type\":\"Question\",\"name\":\"Is this system street legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\u003chr\u003e\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228225806384,"sku":"25-1006","price":679.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1999_2019_Silverado_Sierra_True_Dual_Exhaust_System_Single_Cab_Rear_Exit_25-1006.png?v=1762211145"},{"product_id":"speed-engineering-2007-2024-silverado-sierra-3-5in-single-exhaust-system","title":"Speed Engineering 3.5\" Single Exhaust System — 2007–2024 Chevrolet Silverado \u0026 GMC Sierra 1500 | 25-1072","description":"\u003cp\u003eIf you're looking for a clean, well-built single exhaust upgrade for your Silverado or Sierra, Speed Engineering's 3.5\" system delivers real improvement in flow, tone, and durability over the factory setup. Built from 304 natural stainless steel with mandrel-bent tubing and TIG-welded construction, this system connects to factory hanger locations and includes both an axle exit tip and an over-axle rear exit tip so you can choose your preferred exit style.\u003c\/p\u003e\u003cp\u003eDyno proven and designed to work with Speed Engineering's 1-3\/4\" and 1-7\/8\" longtube headers and Y-pipe. Will adapt to 3.5\" factory exhaust systems with fabrication.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3.5\" Mandrel Bent 304 Stainless Steel Tubing\u003c\/li\u003e\n\u003cli\u003eFull Size Insulated Blow-Through Muffler\u003c\/li\u003e\n\u003cli\u003eAxle Exit Tip\u003c\/li\u003e\n\u003cli\u003eOver-Axle Rear Exit Tip\u003c\/li\u003e\n\u003cli\u003e3.5\" Stainless Band Clamps\u003c\/li\u003e\n\u003cli\u003eConnects to Factory Hanger Locations\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Size Insulated Blow-Through Muffler\u003c\/strong\u003e — Deep tone without drone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoth Exit Tips Included\u003c\/strong\u003e — Axle exit and over-axle rear exit tip included in every kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnects to Factory Hanger Locations\u003c\/strong\u003e — No custom fabrication required for standard applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4, 6, 8, and 10 Speed Automatic Transmissions\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, and 6.2L Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDesigned to Work with Speed Engineering 1-3\/4\" and 1-7\/8\" Longtube Headers and Y-Pipe\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eImportant Fitment Notes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort bed only\u003c\/strong\u003e — fits Single, Crew, and Extra Cab configurations with short bed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWill NOT fit the 2007 Classic body style\u003c\/strong\u003e — 2007 Classic owners need to purchase 1999–2006 exhaust products instead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2019–2024 models\u003c\/strong\u003e with factory rear-exiting bumper exhaust will require modification to work with this system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLonger bed configurations\u003c\/strong\u003e can be accommodated by extending the connection pipes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSUV and non-standard wheelbase applications\u003c\/strong\u003e will require lengthening, shortening, and hanger relocation modifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapts to 3.5\" factory exhaust systems\u003c\/strong\u003e but fabrication is required\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWheelbase Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e119 in — Regular Cab Short Bed\u003c\/li\u003e\n\u003cli\u003e143.5 in — Crew Cab 5'8\" Short Bed \u0026amp; Extra Cab 6' Short Bed\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD) — Short Bed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ New body style only, not Classic\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Silverado 1500 Classic (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — Short Bed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2007 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ New body style only, not Classic\u003c\/li\u003e\n\u003cli\u003e2008 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2014 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2015 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2016 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2017 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2018 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2019 GMC Sierra 1500 Classic (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2019 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003cli\u003e2020 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003cli\u003e2021 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003cli\u003e2022 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003cli\u003e2023 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003cli\u003e2024 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ Factory rear exit bumper exhaust requires modification\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eDoes this exhaust system work with Speed Engineering longtube headers?\u003c\/h5\u003e\u003cp\u003eYes. This system is designed to work with Speed Engineering's 1-3\/4\" and 1-7\/8\" truck longtube headers and Y-pipe. It will also adapt to 3.5\" factory exhaust systems but fabrication will be required.\u003c\/p\u003e\u003ch5\u003eWhich cab and bed configurations does this fit?\u003c\/h5\u003e\u003cp\u003eThis system fits Single Cab, Crew Cab, and Extra Cab configurations with a short bed only. It is not designed for long bed trucks without extending the connection pipes.\u003c\/p\u003e\u003ch5\u003eWill this fit my 2007 Silverado or Sierra?\u003c\/h5\u003e\u003cp\u003eOnly if your 2007 is the new body style. The 2007 Classic body style is not compatible — Classic owners need to purchase 1999–2006 exhaust products instead.\u003c\/p\u003e\u003ch5\u003eDoes this work on 2019–2024 models with factory rear exit bumper exhaust?\u003c\/h5\u003e\u003cp\u003eIt can be modified to work with factory rear-exiting bumper exhaust on 2019–2024 models, but modification is required.\u003c\/p\u003e\u003ch5\u003eWhat exit tip options are included?\u003c\/h5\u003e\u003cp\u003eBoth an axle exit tip and an over-axle rear exit tip are included in every kit, giving you the choice of exit style at installation.\u003c\/p\u003e\u003ch5\u003eWhat transmissions is this compatible with?\u003c\/h5\u003e\u003cp\u003eThis system is compatible with 4, 6, 8, and 10 speed automatic transmissions.\u003c\/p\u003e\u003ch5\u003eWill this fit my SUV or long bed truck?\u003c\/h5\u003e\u003cp\u003eSUV and non-standard wheelbase applications are possible but will require lengthening, shortening, and hanger relocation modifications. Long bed configurations can be accommodated by extending the connection pipes.\u003c\/p\u003e\u003ch5\u003eWhat engines is this compatible with?\u003c\/h5\u003e\u003cp\u003eThis system is compatible with 4.8L, 5.3L, 6.0L, and 6.2L engines found in 2007–2024 Chevrolet Silverado and GMC Sierra 1500 models.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does this exhaust system work with Speed Engineering longtube headers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. This system is designed to work with Speed Engineering's 1-3\/4\\\" and 1-7\/8\\\" truck longtube headers and Y-pipe. 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The 2007 Classic body style is not compatible — Classic owners need to purchase 1999–2006 exhaust products instead.\"}},{\"@type\":\"Question\",\"name\":\"Does this work on 2019–2024 models with factory rear exit bumper exhaust?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It can be modified to work with factory rear-exiting bumper exhaust on 2019–2024 models, but modification is required.\"}},{\"@type\":\"Question\",\"name\":\"What exit tip options are included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Both an axle exit tip and an over-axle rear exit tip are included in every kit, giving you the choice of exit style at installation.\"}},{\"@type\":\"Question\",\"name\":\"What transmissions is this compatible with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This system is compatible with 4, 6, 8, and 10 speed automatic transmissions.\"}},{\"@type\":\"Question\",\"name\":\"Will this fit my SUV or long bed truck?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"SUV and non-standard wheelbase applications are possible but will require lengthening, shortening, and hanger relocation modifications. Long bed configurations can be accommodated by extending the connection pipes.\"}},{\"@type\":\"Question\",\"name\":\"What engines is this compatible with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This system is compatible with 4.8L, 5.3L, 6.0L, and 6.2L engines found in 2007–2024 Chevrolet Silverado and GMC Sierra 1500 models.\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228228329520,"sku":"25-1072","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2007_2024_Silverado_Sierra_3.5_Single_Exhaust_System_25-1072.png?v=1762211266"},{"product_id":"speed-engineering-3in-stainless-straight-exhaust-tubing-pair-44in-length","title":"Speed Engineering 3\" Stainless Straight Exhaust Tubing Pair (44\" Length) 25-1005","description":"\u003cp\u003eStainless Straight Exhaust Tubing (44\" Long, 3\" Dia) Pair\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures include:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNatural Stainless Steel\u003c\/li\u003e\n\u003cli\u003e3\" Diameter\u003c\/li\u003e\n\u003cli\u003eSold in Pairs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat material is this exhaust tubing made from?\u003c\/h5\u003e\u003cp\u003eIt's made from natural stainless steel.\u003c\/p\u003e\u003ch5\u003eWhat size is this tubing?\u003c\/h5\u003e\u003cp\u003eIt's 3\" in diameter and 44\" long.\u003c\/p\u003e\u003ch5\u003eHow many pieces come in this listing?\u003c\/h5\u003e\u003cp\u003eIt's sold in pairs (2 pieces of 44\" tubing).\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What material is this exhaust tubing made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It's made from natural stainless steel.\"}}, {\"@type\": \"Question\", \"name\": \"What size is this tubing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It's 3\\\" in diameter and 44\\\" long.\"}}, {\"@type\": \"Question\", \"name\": \"How many pieces come in this listing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It's sold in pairs (2 pieces of 44\\\" tubing).\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228229705776,"sku":"25-1005","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_3_Stainless_Straight_Exhaust_Tubing_Pair_44_Length_25-1005.png?v=1762211404"},{"product_id":"speed-engineering-3in-stainless-straight-exhaust-tubing-pair-22in-length","title":"Speed Engineering 3\" Stainless Straight Exhaust Tubing Pair — 22\" Length | 25-1003","description":"\u003cp\u003eNeed straight sections for a custom exhaust build or to extend an existing exhaust system? Speed Engineering's 3\" straight exhaust tubing gives you clean, corrosion-resistant stainless material ready for custom fabrication. Sold as a pair of 22\" lengths.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Diameter\u003c\/strong\u003e — Standard 3\" sizing compatible with Speed Engineering exhaust systems and most 3\" aftermarket exhaust components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e22\" Length Per Piece\u003c\/strong\u003e — Two pieces per set, 44\" total\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural 304 Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as a Pair\u003c\/strong\u003e — Two 22\" sections included per set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eHow many pieces are included?\u003c\/h5\u003e\n\u003cp\u003eThese are sold as a pair — two 22\" straight tubing sections per set, 44\" of total tubing.\u003c\/p\u003e\n\u003ch5\u003eWhat diameter is this tubing?\u003c\/h5\u003e\n\u003cp\u003e3\" diameter, compatible with Speed Engineering 3\" exhaust systems and most standard 3\" aftermarket exhaust components.\u003c\/p\u003e\n\u003ch5\u003eWhat is this tubing used for?\u003c\/h5\u003e\n\u003cp\u003eThis tubing is used for custom exhaust fabrication, extending existing exhaust connection pipes, or modifying exhaust routing on custom builds.\u003c\/p\u003e\n\u003ch5\u003eWhat material is this tubing made from?\u003c\/h5\u003e\n\u003cp\u003eNatural 304 stainless steel for corrosion resistance and long-term durability.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How many pieces are included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These are sold as a pair — two 22\\\" straight tubing sections per set, 44\\\" of total tubing.\"}}, {\"@type\": \"Question\", \"name\": \"What diameter is this tubing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"3\\\" diameter, compatible with Speed Engineering 3\\\" exhaust systems and most standard 3\\\" aftermarket exhaust components.\"}}, {\"@type\": \"Question\", \"name\": \"What is this tubing used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This tubing is used for custom exhaust fabrication, extending existing exhaust connection pipes, or modifying exhaust routing on custom builds.\"}}, {\"@type\": \"Question\", \"name\": \"What material is this tubing made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Natural 304 stainless steel for corrosion resistance and long-term durability.\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228230754352,"sku":"25-1003","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_3_Stainless_Straight_Exhaust_Tubing_Pair_22_Length_25-1003.png?v=1762211484"},{"product_id":"speed-engineering-2007-2013-silverado-sierra-1-7-8in-longtube-headers","title":"Speed Engineering 1-7\/8\" Longtube Headers — 2007–2013 Chevrolet Silverado \u0026 GMC Sierra 1500 | 4.8L\/5.3L\/6.0L\/6.2L | 25-1009 ETA 10\/30\/26","description":"\u003cp\u003eThe factory exhaust manifolds on your GMT900 Silverado, Sierra, or full-size SUV are one of the first restrictions holding back your LS engine. Speed Engineering's 1-7\/8\" longtube headers are a direct-fit, dyno-proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 25 rear-wheel horsepower over stock.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, merge spikes, and full TIG-welded construction.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWill NOT fit the 2007 Classic body style\u003c\/strong\u003e — 2007 Classic owners need to purchase 1999–2006 exhaust products instead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eY-pipe installation\u003c\/strong\u003e — works with 6 speed automatic transmissions. Depending on factory exhaust type, some cutting or welding may be required for Y-pipe install\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-7\/8\" Primary Tubes with Merge Spike\u003c\/strong\u003e — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on 4.8L, 5.3L, 6.0L, and 6.2L applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, and 6.2L LS V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ New body style only, not Classic\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ New body style only, not Classic\u003c\/li\u003e\n\u003cli\u003e2008 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Tahoe (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Yukon (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2008 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2014 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2008 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2014 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade EXT (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2008 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2014 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Avalanche (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's 1-7\/8\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 4.8L, 5.3L, 6.0L, and 6.2L LS equipped applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWill these fit my 2007 Classic body style Silverado or Sierra?\u003c\/h5\u003e\n\u003cp\u003eNo. These headers are for the new 2007 body style only. 2007 Classic body style owners need to purchase 1999–2006 exhaust products instead.\u003c\/p\u003e\n\u003ch5\u003eWill a Y-pipe work with my transmission?\u003c\/h5\u003e\n\u003cp\u003eThe Y-pipe works with 6 speed automatic transmissions. Depending on your factory exhaust type, some cutting or welding may be required for proper Y-pipe installation.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese headers are compatible with GM LS V8 engines including 4.8L, 5.3L, 6.0L, and 6.2L found in 2007–2014 Silverado, Sierra, Tahoe, Yukon, Escalade, EXT, and Avalanche applications.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\u003c\/p\u003e\n\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\n\u003cp\u003eYes. Standard graphite manifold gaskets are included with the headers.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-7\/8\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 4.8L, 5.3L, 6.0L, and 6.2L LS equipped applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit my 2007 Classic body style Silverado or Sierra?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are for the new 2007 body style only. 2007 Classic body style owners need to purchase 1999–2006 exhaust products instead.\"}}, {\"@type\": \"Question\", \"name\": \"Will a Y-pipe work with my transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Y-pipe works with 6 speed automatic transmissions. Depending on your factory exhaust type, some cutting or welding may be required for proper Y-pipe installation.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with GM LS V8 engines including 4.8L, 5.3L, 6.0L, and 6.2L found in 2007–2014 Silverado, Sierra, Tahoe, Yukon, Escalade, EXT, and Avalanche applications.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\"}}, {\"@type\": \"Question\", \"name\": \"Are gaskets included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Standard graphite manifold gaskets are included with the headers.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228252086320,"sku":"25-1009","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2007_2013_Silverado_Sierra_1-7_8_Longtube_Headers_25-1009.png?v=1762213080"},{"product_id":"speed-engineering-2007-2013-silverado-sierra-1-3-4in-longtube-headers","title":"Speed Engineering 1-3\/4\" Longtube Headers — 2007–2013 Chevrolet Silverado \u0026 GMC Sierra GMT900 | 4.8L\/5.3L\/6.0L\/6.2L | 25-1013","description":"\u003cp\u003eThe factory exhaust manifolds on your GMT900 Silverado, Sierra, or full-size SUV are one of the first restrictions holding back your LS engine. Speed Engineering's 1-3\/4\" longtube headers are a direct-fit, dyno-proven upgrade delivering over 25 rear-wheel horsepower over stock with improved throttle response and a deeper, more aggressive exhaust tone. Covers 2007–2013 trucks and SUVs on the new GMT900 body style. Y-pipe sold separately and required for installation.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, merge spikes, CNC-machined flanges, and full TIG-welded construction. Standard graphite manifold gaskets included.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2007 Classic body style only:\u003c\/strong\u003e These headers will NOT fit the 2007 Classic (carry-over GMT800 body). 2007 Classic owners should purchase 1999–2006 exhaust products instead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eY-pipe:\u003c\/strong\u003e The Speed Engineering Y-pipe works with 6-speed automatic transmissions. Depending on factory exhaust configuration, some cutting or welding may be required for Y-pipe installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-3\/4\" Primary Tubes with Merge Spikes\u003c\/strong\u003e — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on 4.8L, 5.3L, 6.0L, and 6.2L applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, and 6.2L LS V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ New body style only — NOT Classic\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L ⚠️ New body style only — NOT Classic\u003c\/li\u003e\n\u003cli\u003e2008 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Tahoe (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Yukon (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2008 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2009 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2010 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2011 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2012 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2013 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2014 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2008 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2014 Cadillac Escalade (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade EXT (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2008 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003cli\u003e2014 Cadillac Escalade EXT (2WD\/4WD) — 6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Avalanche (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill these fit the 2007 Classic Silverado or Sierra?\u003c\/h5\u003e\n\u003cp\u003eNo. The 2007 Classic is a carry-over of the older GMT800 body style. These headers are designed for the 2007 new body style (GMT900) only. 2007 Classic owners should purchase 1999–2006 exhaust products.\u003c\/p\u003e\n\u003ch5\u003eIs a Y-pipe included?\u003c\/h5\u003e\n\u003cp\u003eNo. These are headers only. The Speed Engineering Y-pipe kit is sold separately and is required for proper installation. The Y-pipe is compatible with 6-speed automatic transmissions. Depending on your factory exhaust configuration, some cutting or welding may be required for Y-pipe installation.\u003c\/p\u003e\n\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's 1-3\/4\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 2007–2013 GMT900 applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese headers are compatible with GM LS V8 engines including 4.8L, 5.3L, 6.0L, and 6.2L found in 2007–2013 Silverado, Sierra, and GMT900 full-size SUV applications.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\u003c\/p\u003e\n\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\n\u003cp\u003eYes. Standard graphite manifold gaskets are included.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will these fit the 2007 Classic Silverado or Sierra?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The 2007 Classic is a carry-over of the older GMT800 body style. These headers are designed for the 2007 new body style (GMT900) only. 2007 Classic owners should purchase 1999–2006 exhaust products.\"}}, {\"@type\": \"Question\", \"name\": \"Is a Y-pipe included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are headers only. The Speed Engineering Y-pipe kit is sold separately and is required for proper installation. The Y-pipe is compatible with 6-speed automatic transmissions. Depending on your factory exhaust configuration, some cutting or welding may be required for Y-pipe installation.\"}}, {\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-3\/4\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 2007–2013 GMT900 applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with GM LS V8 engines including 4.8L, 5.3L, 6.0L, and 6.2L found in 2007–2013 Silverado, Sierra, and GMT900 full-size SUV applications.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\"}}, {\"@type\": \"Question\", \"name\": \"Are gaskets included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Standard graphite manifold gaskets are included.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228252512304,"sku":"25-1013","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2007_2013_Silverado_Sierra_1-3_4_Longtube_Headers_25-1013.png?v=1762213416"},{"product_id":"speed-engineering-1999-2013-silverado-sierra-tahoe-yukon-escalade-shorty-headers","title":"Speed Engineering Shorty Headers — 1999–2013 Chevrolet Silverado \u0026 GMC Sierra 1500 \u0026 GM SUVs | 4.8L\/5.3L\/6.0L\/6.2L | 25-1016","description":"\u003cp\u003eLooking for a direct-fit manifold replacement for your GMT800 or GMT900 Silverado, Sierra, Tahoe, Yukon, Escalade, or Avalanche that bolts right in with the factory single exhaust system? Speed Engineering's 1-5\/8\" shorty headers are a mandrel bent, TIG-welded direct manifold replacement built from 304 natural stainless steel. Race version — no air or EGR fittings. Works with the factory single exhaust Y-pipe system. Dyno proven to deliver over 12 rear-wheel horsepower over stock manifolds. Tested on 1\/2 ton applications only.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Works on factory single exhaust system with traditional Y-pipe. Tested on 1\/2 ton applications only.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5\/8\" Primary Tubes\u003c\/strong\u003e — Improved flow over stock cast iron manifolds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5\" Collectors\u003c\/strong\u003e — Direct connection to factory exhaust system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace Version — No Air or EGR Fittings\u003c\/strong\u003e — Not compatible with emissions equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShorty Header Design\u003c\/strong\u003e — Direct manifold replacement for factory-correct fitment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter throughout; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the cylinder head for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 12+ RWHP gain over stock manifolds\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, and 6.2L V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2000 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2001 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2007 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2008 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Tahoe (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Yukon (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2000 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2001 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2007 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2008 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Yukon Denali (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 GMC Yukon Denali (2WD\/4WD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2008 GMC Yukon Denali (2WD\/4WD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 GMC Yukon Denali (2WD\/4WD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 GMC Yukon Denali (2WD\/4WD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 GMC Yukon Denali (2WD\/4WD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 GMC Yukon Denali (2WD\/4WD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 GMC Yukon Denali (2WD\/4WD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Avalanche (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2001 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Avalanche (2WD\/4WD) — 4.8L\/5.3L\/6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade (AWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Cadillac Escalade (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2008 Cadillac Escalade (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Cadillac Escalade (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Cadillac Escalade (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Cadillac Escalade (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Cadillac Escalade (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Cadillac Escalade (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade EXT (AWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Cadillac Escalade EXT (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2008 Cadillac Escalade EXT (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2009 Cadillac Escalade EXT (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2010 Cadillac Escalade EXT (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2011 Cadillac Escalade EXT (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2012 Cadillac Escalade EXT (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003cli\u003e2013 Cadillac Escalade EXT (AWD) — 6.0L\/6.2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWhat is the difference between these shorty headers and the longtube headers for this platform?\u003c\/h5\u003e\n\u003cp\u003eShorty headers are a direct manifold replacement that connect to your existing factory single exhaust Y-pipe system — no additional exhaust components required. Longtube headers deliver more horsepower (25+ RWHP) but require a Y-pipe or X-pipe to complete the installation. Choose shorties for an easy bolt-on upgrade; choose longtubes for maximum performance.\u003c\/p\u003e\n\u003ch5\u003eDo these work with a dual exhaust setup?\u003c\/h5\u003e\n\u003cp\u003eThese headers work with the factory single exhaust system and traditional Y-pipe setup. They have only been tested on 1\/2 ton applications.\u003c\/p\u003e\n\u003ch5\u003eDo these headers have air or EGR fittings?\u003c\/h5\u003e\n\u003cp\u003eNo. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.\u003c\/p\u003e\n\u003ch5\u003eWill these fit 2500 or 3500 models?\u003c\/h5\u003e\n\u003cp\u003eThese headers have only been tested on 1\/2 ton applications. Fitment on 2500 or 3500 models is not confirmed.\u003c\/p\u003e\n\u003ch5\u003eWhy do the available engine sizes change at 2007?\u003c\/h5\u003e\n\u003cp\u003eThe 2007 model year introduced the GMT900 platform, which added 6.0L and 6.2L engine availability to the lineup. 1999–2006 GMT800 trucks came with 4.8L and 5.3L engines only on the 1500 platform.\u003c\/p\u003e\n\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's shorty headers are dyno proven to add over 12 rear-wheel horsepower over stock manifolds.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\n\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\n\u003cp\u003eYes. Standard graphite manifold gaskets are included.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cblockquote\u003e\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\u003c\/blockquote\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between these shorty headers and the longtube headers for this platform?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Shorty headers are a direct manifold replacement that connect to your existing factory single exhaust Y-pipe system — no additional exhaust components required. Longtube headers deliver more horsepower (25+ RWHP) but require a Y-pipe or X-pipe to complete the installation. Choose shorties for an easy bolt-on upgrade; choose longtubes for maximum performance.\"}}, {\"@type\": \"Question\", \"name\": \"Do these work with a dual exhaust setup?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers work with the factory single exhaust system and traditional Y-pipe setup. They have only been tested on 1\/2 ton applications.\"}}, {\"@type\": \"Question\", \"name\": \"Do these headers have air or EGR fittings?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit 2500 or 3500 models?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers have only been tested on 1\/2 ton applications. Fitment on 2500 or 3500 models is not confirmed.\"}}, {\"@type\": \"Question\", \"name\": \"Why do the available engine sizes change at 2007?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 2007 model year introduced the GMT900 platform, which added 6.0L and 6.2L engine availability to the lineup. 1999–2006 GMT800 trucks came with 4.8L and 5.3L engines only on the 1500 platform.\"}}, {\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's shorty headers are dyno proven to add over 12 rear-wheel horsepower over stock manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\"}}, {\"@type\": \"Question\", \"name\": \"Are gaskets included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Standard graphite manifold gaskets are included.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228258607152,"sku":"25-1016","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1999_2013_Silverado_Sierra_Tahoe_Yukon_Escalade_Shorty_Headers_25-1016.png?v=1762213578"},{"product_id":"speed-engineering-2007-2013-silverado-sierra-off-road-y-pipe-25-1015","title":"Speed Engineering Off-Road Y-Pipe — 2007–2013 Chevrolet Silverado \u0026 GMC Sierra | 25-1015","description":"\u003cp\u003eConnecting your Speed Engineering longtube headers to the cat-back on your GMT900 Silverado or Sierra? This is the Y-pipe that completes the system. Built from 3\" mandrel bent 304 natural stainless steel with a 3.5\" exit, an optional 3\" reducer, TIG-welded construction, and stainless band clamps included. An optional wideband O₂ bung is available for tuning applications.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for use with Speed Engineering longtube headers only\u003c\/strong\u003e — NOT compatible with factory exhaust manifolds\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWorks with 6 speed automatic transmissions\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDepending on factory exhaust type, some cutting or welding may be required for installation\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5\" Y-Pipe Exit with Optional 3\" Reducer\u003c\/strong\u003e — Flexibility to connect to standard 3\" cat-back systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wideband Tuning Bung\u003c\/strong\u003e — Available for wideband O₂ sensor placement for tuning applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStainless Steel Band Clamps Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Silverado 1500 (2WD\/4WD) ⚠️ New body style only, not Classic\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Silverado 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Silverado 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Silverado 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Silverado 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Silverado 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Silverado 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 GMC Sierra 1500 (2WD\/4WD) ⚠️ New body style only, not Classic\u003c\/li\u003e\n\u003cli\u003e2008 GMC Sierra 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2009 GMC Sierra 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2010 GMC Sierra 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2011 GMC Sierra 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2012 GMC Sierra 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2013 GMC Sierra 1500 (2WD\/4WD)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Tahoe (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Tahoe (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Tahoe (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Tahoe (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Tahoe (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Tahoe (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Tahoe (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Tahoe (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Tahoe (2WD\/4WD)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Yukon (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 GMC Yukon (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2008 GMC Yukon (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2009 GMC Yukon (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2010 GMC Yukon (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2011 GMC Yukon (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2012 GMC Yukon (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2013 GMC Yukon (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2014 GMC Yukon (2WD\/4WD)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Cadillac Escalade (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2008 Cadillac Escalade (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2009 Cadillac Escalade (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2010 Cadillac Escalade (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2011 Cadillac Escalade (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2012 Cadillac Escalade (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2013 Cadillac Escalade (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2014 Cadillac Escalade (2WD\/4WD)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade EXT (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Cadillac Escalade EXT (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2008 Cadillac Escalade EXT (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2009 Cadillac Escalade EXT (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2010 Cadillac Escalade EXT (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2011 Cadillac Escalade EXT (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2012 Cadillac Escalade EXT (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2013 Cadillac Escalade EXT (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2014 Cadillac Escalade EXT (2WD\/4WD)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Avalanche (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2007 Chevrolet Avalanche (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Avalanche (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Avalanche (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2010 Chevrolet Avalanche (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Avalanche (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Avalanche (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Avalanche (2WD\/4WD)\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Avalanche (2WD\/4WD)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill this Y-pipe work with my factory exhaust manifolds?\u003c\/h5\u003e\n\u003cp\u003eNo. This Y-pipe is designed for use with Speed Engineering longtube headers only. It is not compatible with factory exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWill this Y-pipe work with my transmission?\u003c\/h5\u003e\n\u003cp\u003eThis Y-pipe works with 6 speed automatic transmissions. Depending on your factory exhaust type, some cutting or welding may be required for proper installation.\u003c\/p\u003e\n\u003ch5\u003eWhat is the exit diameter on this Y-pipe?\u003c\/h5\u003e\n\u003cp\u003eThis Y-pipe features a 3.5\" exit with an optional 3\" reducer available for connecting to standard 3\" cat-back systems.\u003c\/p\u003e\n\u003ch5\u003eIs a wideband O₂ bung included?\u003c\/h5\u003e\n\u003cp\u003eAn optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\u003c\/p\u003e\n\u003ch5\u003eWhat material is this Y-pipe made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. Stainless band clamps are included.\u003c\/p\u003e\n\u003ch5\u003eIs this Y-pipe street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3)\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will this Y-pipe work with my factory exhaust manifolds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This Y-pipe is designed for use with Speed Engineering longtube headers only. It is not compatible with factory exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"Will this Y-pipe work with my transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This Y-pipe works with 6 speed automatic transmissions. Depending on your factory exhaust type, some cutting or welding may be required for proper installation.\"}}, {\"@type\": \"Question\", \"name\": \"What is the exit diameter on this Y-pipe?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This Y-pipe features a 3.5\\\" exit with an optional 3\\\" reducer available for connecting to standard 3\\\" cat-back systems.\"}}, {\"@type\": \"Question\", \"name\": \"Is a wideband O₂ bung included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"An optional wideband O₂ bung is available for wideband sensor placement for tuning applications.\"}}, {\"@type\": \"Question\", \"name\": \"What material is this Y-pipe made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. Stainless band clamps are included.\"}}, {\"@type\": \"Question\", \"name\": \"Is this Y-pipe street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228260540464,"sku":"25-1015","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2007-2013_Silverado_Sierra_Off-Road_Y-Pipe.png?v=1762214838"},{"product_id":"speed-engineering-1999-2006-silverado-sierra-2in-longtube-headers","title":"Speed Engineering 2\" Longtube Headers — 1999–2006 Chevrolet Silverado \u0026 GMC Sierra | 4.8L\/5.3L\/6.0L LS | 25-1077","description":"\u003cp\u003eLooking to maximize exhaust flow on your GMT800 Silverado, Sierra, or full-size SUV? Speed Engineering's 2\" longtube headers are the most aggressive primary tube option in the GMT800 lineup — delivering maximum exhaust flow for builds with supporting modifications. This is the race version — no air or EGR fittings. Dyno proven to deliver over 25 rear-wheel horsepower over stock manifolds.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, and full TIG-welded construction. The revised Y-pipe design now works with both 4L60E and 4L80E transmissions and provides additional clearance for 4WD vehicles.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace version — no air or EGR fittings\u003c\/strong\u003e — not compatible with emissions equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilverado SS\u003c\/strong\u003e — Speed Engineering's Y-pipe is a single outlet and will NOT connect directly to the Silverado SS factory dual inlet cat-back without modification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6.0L applications\u003c\/strong\u003e — most 6.0L trucks have a 2-into-1 factory exhaust system that the Y-pipe will NOT work with. Verify your factory exhaust configuration before purchasing. The X-pipe kit can work on 2-into-1 exhaust systems but will require fabrication for connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L80E transmission\u003c\/strong\u003e — bellhousing ears may need to be trimmed for proper clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarlier 2500 models\u003c\/strong\u003e may have fitment issues due to upper control arms being mounted on top of the chassis from previous years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 2\" Primary Tubes\u003c\/strong\u003e — Maximum flow on 4.8L, 5.3L, and 6.0L LS applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRace Version — No Air or EGR Fittings\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRevised Y-Pipe Design\u003c\/strong\u003e — Compatible with 4L60E and 4L80E transmissions and provides additional 4WD clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on 4.8L, 5.3L, and 6.0L applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, and 6.0L LS V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2000 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2001 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2002 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2003 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2004 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2005 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2006 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Tahoe (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Yukon (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2000 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2001 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2002 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2003 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2004 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2005 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2006 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade EXT (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2002 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2003 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2004 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2005 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2006 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Avalanche (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2002 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWhat is the difference between these 2\" headers and the 1-7\/8\" headers (25-1011) for this platform?\u003c\/h5\u003e\n\u003cp\u003eThe primary tube diameter is the key difference. The 2\" headers deliver maximum exhaust flow for more aggressive builds with supporting modifications such as a cam, heads, or tune. The 1-7\/8\" headers are a strong choice for most street and performance builds across a broader RPM range.\u003c\/p\u003e\n\u003ch5\u003eDo these headers have air or EGR fittings?\u003c\/h5\u003e\n\u003cp\u003eNo. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.\u003c\/p\u003e\n\u003ch5\u003eWill these fit my Silverado SS?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's Y-pipe is a single outlet and will not connect directly to the Silverado SS factory dual inlet cat-back without modification.\u003c\/p\u003e\n\u003ch5\u003eWill a Y-pipe work on my 6.0L truck?\u003c\/h5\u003e\n\u003cp\u003eMost 6.0L trucks have a 2-into-1 factory exhaust system that the Y-pipe will NOT work with. Verify your factory exhaust configuration before purchasing. The X-pipe kit can be used on 2-into-1 exhaust systems but will require fabrication for the connection.\u003c\/p\u003e\n\u003ch5\u003eWill these fit with a 4L80E transmission?\u003c\/h5\u003e\n\u003cp\u003eThe revised Y-pipe design is now compatible with 4L60E and 4L80E transmissions. These headers may still require trimming of the bellhousing ears on 4L80E transmissions for proper clearance.\u003c\/p\u003e\n\u003ch5\u003eWill these fit on a 2500 model truck?\u003c\/h5\u003e\n\u003cp\u003eEarlier 2500 models may have fitment issues due to upper control arms being mounted on top of the chassis from previous years. Verify your specific application before ordering.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese headers are compatible with GM LS V8 engines including 4.8L, 5.3L, and 6.0L found in 1999–2006 Silverado, Sierra, Tahoe, Yukon, Escalade, EXT, and Avalanche applications.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between these 2\\\" headers and the 1-7\/8\\\" headers (25-1011) for this platform?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The primary tube diameter is the key difference. The 2\\\" headers deliver maximum exhaust flow for more aggressive builds with supporting modifications such as a cam, heads, or tune. The 1-7\/8\\\" headers are a strong choice for most street and performance builds across a broader RPM range.\"}}, {\"@type\": \"Question\", \"name\": \"Do these headers have air or EGR fittings?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit my Silverado SS?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's Y-pipe is a single outlet and will not connect directly to the Silverado SS factory dual inlet cat-back without modification.\"}}, {\"@type\": \"Question\", \"name\": \"Will a Y-pipe work on my 6.0L truck?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Most 6.0L trucks have a 2-into-1 factory exhaust system that the Y-pipe will NOT work with. Verify your factory exhaust configuration before purchasing. The X-pipe kit can be used on 2-into-1 exhaust systems but will require fabrication for the connection.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit with a 4L80E transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The revised Y-pipe design is now compatible with 4L60E and 4L80E transmissions. These headers may still require trimming of the bellhousing ears on 4L80E transmissions for proper clearance.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit on a 2500 model truck?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Earlier 2500 models may have fitment issues due to upper control arms being mounted on top of the chassis from previous years. Verify your specific application before ordering.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with GM LS V8 engines including 4.8L, 5.3L, and 6.0L found in 1999–2006 Silverado, Sierra, Tahoe, Yukon, Escalade, EXT, and Avalanche applications.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228271681584,"sku":"25-1077","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1999_2006_Silverado_Sierra_2_Longtube_Headers_25-1077.jpg?v=1762213908"},{"product_id":"speed-engineering-1999-2006-silverado-sierra-1-7-8in-longtube-headers","title":"Speed Engineering 1-7\/8\" Longtube Headers — 1999–2006 Chevrolet Silverado \u0026 GMC Sierra | 4.8L\/5.3L\/6.0L LS | 25-1011","description":"\u003cp\u003eThe factory exhaust manifolds on your GMT800 Silverado, Sierra, or full-size SUV are one of the first restrictions holding back your LS engine. Speed Engineering's 1-7\/8\" longtube headers are a direct-fit, dyno-proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 25 rear-wheel horsepower over stock. This is the race version — no air or EGR fittings.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, and full TIG-welded construction.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace version — no air or EGR fittings\u003c\/strong\u003e — not compatible with emissions equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilverado SS\u003c\/strong\u003e — these headers are NOT a direct fit to the Silverado SS dual inlet exhaust system. Speed Engineering's Y-pipe is a single outlet and will not connect directly to the Silverado SS factory dual inlet cat-back without modification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6.0L applications\u003c\/strong\u003e — most 6.0L trucks have a 2-into-1 factory exhaust system that the Y-pipe will NOT work with. Verify your factory exhaust configuration before purchasing. The X-pipe kit can work on 2-into-1 exhaust systems but will require fabrication for connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L80E transmission\u003c\/strong\u003e — bellhousing ears may need to be trimmed for proper clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarlier 2500 models\u003c\/strong\u003e may have fitment issues due to upper control arms being mounted on top of the chassis from previous years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-7\/8\" Primary Tubes\u003c\/strong\u003e — Sized for maximum flow on 4.8L, 5.3L, and 6.0L LS applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRace Version — No Air or EGR Fittings\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on 4.8L, 5.3L, and 6.0L applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, and 6.0L LS V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2000 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2001 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2002 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2003 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2004 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2005 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2006 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Tahoe (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Yukon (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2000 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2001 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2002 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2003 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2004 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2005 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2006 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade EXT (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2002 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2003 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2004 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2005 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2006 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Avalanche (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2002 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's 1-7\/8\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 4.8L, 5.3L, and 6.0L LS equipped applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between the 1-3\/4\" and 1-7\/8\" headers for these trucks?\u003c\/h5\u003e\n\u003cp\u003eThe primary tube diameter is the key difference. The 1-3\/4\" headers (25-1012) work well across a broad RPM range and are a strong choice for most street and mild performance builds. The 1-7\/8\" headers offer a step up in flow better suited for more aggressive builds with supporting modifications.\u003c\/p\u003e\n\u003ch5\u003eDo these headers have air or EGR fittings?\u003c\/h5\u003e\n\u003cp\u003eNo. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.\u003c\/p\u003e\n\u003ch5\u003eWill these fit my Silverado SS?\u003c\/h5\u003e\n\u003cp\u003eThese headers are not a direct fit to the Silverado SS factory dual inlet cat-back exhaust system. Speed Engineering's Y-pipe is a single outlet and will not connect directly to the Silverado SS dual inlet cat-back without modification.\u003c\/p\u003e\n\u003ch5\u003eWill a Y-pipe work on my 6.0L truck?\u003c\/h5\u003e\n\u003cp\u003eMost 6.0L trucks have a 2-into-1 factory exhaust system that the Y-pipe will NOT work with. Verify your factory exhaust configuration before purchasing. The X-pipe kit can be used on 2-into-1 exhaust systems but will require fabrication for the connection.\u003c\/p\u003e\n\u003ch5\u003eWill these fit with a 4L80E transmission?\u003c\/h5\u003e\n\u003cp\u003eThese headers may require trimming of the bellhousing ears on 4L80E transmissions for proper clearance.\u003c\/p\u003e\n\u003ch5\u003eWill these fit on a 2500 model truck?\u003c\/h5\u003e\n\u003cp\u003eEarlier 2500 models may have fitment issues due to upper control arms being mounted on top of the chassis from previous years. Verify your specific application before ordering.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\n\u003cp\u003eThese headers are compatible with GM LS V8 engines including 4.8L, 5.3L, and 6.0L found in 1999–2006 Silverado, Sierra, Tahoe, Yukon, Escalade, EXT, and Avalanche applications.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\u003c\/p\u003e\n\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\n\u003cp\u003eYes. Standard graphite manifold gaskets are included with the headers.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\n\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-7\/8\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 4.8L, 5.3L, and 6.0L LS equipped applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between the 1-3\/4\\\" and 1-7\/8\\\" headers for these trucks?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The primary tube diameter is the key difference. The 1-3\/4\\\" headers (25-1012) work well across a broad RPM range and are a strong choice for most street and mild performance builds. The 1-7\/8\\\" headers offer a step up in flow better suited for more aggressive builds with supporting modifications.\"}}, {\"@type\": \"Question\", \"name\": \"Do these headers have air or EGR fittings?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit my Silverado SS?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are not a direct fit to the Silverado SS factory dual inlet cat-back exhaust system. Speed Engineering's Y-pipe is a single outlet and will not connect directly to the Silverado SS dual inlet cat-back without modification.\"}}, {\"@type\": \"Question\", \"name\": \"Will a Y-pipe work on my 6.0L truck?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Most 6.0L trucks have a 2-into-1 factory exhaust system that the Y-pipe will NOT work with. Verify your factory exhaust configuration before purchasing. The X-pipe kit can be used on 2-into-1 exhaust systems but will require fabrication for the connection.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit with a 4L80E transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers may require trimming of the bellhousing ears on 4L80E transmissions for proper clearance.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit on a 2500 model truck?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Earlier 2500 models may have fitment issues due to upper control arms being mounted on top of the chassis from previous years. Verify your specific application before ordering.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with GM LS V8 engines including 4.8L, 5.3L, and 6.0L found in 1999–2006 Silverado, Sierra, Tahoe, Yukon, Escalade, EXT, and Avalanche applications.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.\"}}, {\"@type\": \"Question\", \"name\": \"Are gaskets included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Standard graphite manifold gaskets are included with the headers.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228272435248,"sku":"25-1011","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1999_2006_Silverado_Sierra_1-7_8_Longtube_Headers_25-1011.png?v=1762214003"},{"product_id":"speed-engineering-1999-2006-silverado-sierra-1-3-4-longtube-headers-4-8l-5-3l-6-0l","title":"Speed Engineering 1-3\/4\" Longtube Headers — 1999–2006 Chevrolet Silverado \u0026 GMC Sierra | 4.8L\/5.3L\/6.0L LS | 25-1012","description":"\u003cp\u003eThe factory exhaust manifolds on your GMT800 Silverado, Sierra, or full-size SUV are one of the first restrictions holding back your LS engine. Speed Engineering's 1-3\/4\" longtube headers are a direct-fit, dyno-proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 25 rear-wheel horsepower over stock. This is the race version — no air or EGR fittings.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, merge spikes, and full TIG-welded construction.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace version — no air or EGR fittings\u003c\/strong\u003e — not compatible with emissions equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilverado SS\u003c\/strong\u003e — these headers are NOT a direct fit to the Silverado SS dual inlet exhaust system. Speed Engineering's Y-pipe is a single outlet and will not connect directly to the Silverado SS factory dual inlet cat-back without modification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6.0L applications\u003c\/strong\u003e — most 6.0L trucks have a 2-into-1 factory exhaust system that the Y-pipe will NOT work with. Verify your factory exhaust configuration before purchasing. The X-pipe kit can work on 2-into-1 exhaust systems but will require fabrication for connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L80E transmission\u003c\/strong\u003e — bellhousing ears may need to be trimmed for proper clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarlier 2500 models\u003c\/strong\u003e may have fitment issues due to upper control arms being mounted on top of the chassis from previous years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1-3\/4\" Primary Tubes with Merge Spikes\u003c\/strong\u003e — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Collector\u003c\/strong\u003e — Optimized for strong low-to-mid RPM torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel Bent Tubing\u003c\/strong\u003e — Consistent tube diameter through every bend; no crimping, no restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Flanges\u003c\/strong\u003e — Precision fit at the head and collector for a leak-free seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Natural Stainless Steel Construction\u003c\/strong\u003e — Corrosion resistant, heat tolerant, and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRace Version — No Air or EGR Fittings\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain on 4.8L, 5.3L, and 6.0L applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, and 6.0L LS V8 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 Engines Only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Silverado 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Silverado 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2000 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2001 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2002 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2003 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2004 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2005 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003cli\u003e2006 GMC Sierra 1500 (2WD\/4WD) — 4.8L\/5.3L\/6.0L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Tahoe (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Tahoe (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Yukon (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1999 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2000 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2001 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2002 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2003 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2004 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2005 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003cli\u003e2006 GMC Yukon (2WD\/4WD) — 4.8L\/5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2002 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2003 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2004 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2005 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2006 Cadillac Escalade (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCadillac Escalade EXT (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2002 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2003 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2004 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2005 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003cli\u003e2006 Cadillac Escalade EXT (2WD\/4WD) — 6.0L ⚠️ Verify factory exhaust configuration — see 6.0L note above\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Avalanche (2WD\/4WD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2002 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2005 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003cli\u003e2006 Chevrolet Avalanche (2WD\/4WD) — 5.3L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's 1-3\/4\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 4.8L, 5.3L, and 6.0L LS equipped applications compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eDo these headers have air or EGR fittings?\u003c\/h5\u003e\u003cp\u003eNo. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.\u003c\/p\u003e\n\u003ch5\u003eWill these fit my Silverado SS?\u003c\/h5\u003e\u003cp\u003eThese headers are not a direct fit to the Silverado SS factory dual inlet cat-back exhaust system. Speed Engineering's Y-pipe is a single outlet and will not connect directly to the Silverado SS dual inlet cat-back without modification.\u003c\/p\u003e\n\u003ch5\u003eWill a Y-pipe work on my 6.0L truck?\u003c\/h5\u003e\u003cp\u003eMost 6.0L trucks have a 2-into-1 factory exhaust system that the Y-pipe will NOT work with. Verify your factory exhaust configuration before purchasing. The X-pipe kit can be used on 2-into-1 exhaust systems but will require fabrication for the connection.\u003c\/p\u003e\n\u003ch5\u003eWill these fit with a 4L80E transmission?\u003c\/h5\u003e\u003cp\u003eThese headers may require trimming of the bellhousing ears on 4L80E transmissions for proper clearance.\u003c\/p\u003e\n\u003ch5\u003eWill these fit on a 2500 model truck?\u003c\/h5\u003e\u003cp\u003eEarlier 2500 models may have fitment issues due to upper control arms being mounted on top of the chassis from previous years. Verify your specific application before ordering.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible with GM LS V8 engines including 4.8L, 5.3L, and 6.0L found in 1999–2006 Silverado, Sierra, Tahoe, Yukon, Escalade, EXT, and Avalanche applications.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\u003c\/p\u003e\n\u003ch5\u003eAre gaskets included?\u003c\/h5\u003e\u003cp\u003eYes. Standard graphite manifold gaskets are included with the headers.\u003c\/p\u003e\n\u003ch5\u003eAre these headers street legal?\u003c\/h5\u003e\u003cp\u003eNo. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-3\/4\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 4.8L, 5.3L, and 6.0L LS equipped applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"Do these headers have air or EGR fittings?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit my Silverado SS?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are not a direct fit to the Silverado SS factory dual inlet cat-back exhaust system. Speed Engineering's Y-pipe is a single outlet and will not connect directly to the Silverado SS dual inlet cat-back without modification.\"}}, {\"@type\": \"Question\", \"name\": \"Will a Y-pipe work on my 6.0L truck?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Most 6.0L trucks have a 2-into-1 factory exhaust system that the Y-pipe will NOT work with. Verify your factory exhaust configuration before purchasing. The X-pipe kit can be used on 2-into-1 exhaust systems but will require fabrication for the connection.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit with a 4L80E transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers may require trimming of the bellhousing ears on 4L80E transmissions for proper clearance.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit on a 2500 model truck?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Earlier 2500 models may have fitment issues due to upper control arms being mounted on top of the chassis from previous years. Verify your specific application before ordering.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with GM LS V8 engines including 4.8L, 5.3L, and 6.0L found in 1999–2006 Silverado, Sierra, Tahoe, Yukon, Escalade, EXT, and Avalanche applications.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.\"}}, {\"@type\": \"Question\", \"name\": \"Are gaskets included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Standard graphite manifold gaskets are included with the headers.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).\"}}]}\u003c\/script\u003e\n\u003chr\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eRace Use Only:\u003c\/strong\u003e This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228274204720,"sku":"25-1012","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1999_2006_Silverado_Sierra_1-3_4_Longtube_Headers_4.8L_5.3L_6.0L_25-1012.png?v=1762286340"}],"url":"https:\/\/berryperformancesales.com\/collections\/exhaust.oembed?page=136","provider":"Berry Performance Sales","version":"1.0","type":"link"}