{"title":"Best Selling","description":"","products":[{"product_id":"3d-maxpider-16-22-chevrolet-camaro-kagu-cargo-liner-black","title":"3D MAXpider 16-22 Chevrolet Camaro Kagu Cargo Liner - Black","description":"\u003cp\u003eUnlike the traditional floor mats with heavy weights, commercial rubbery looking; 3D MAXpider custom-fit floor mats are the revolutionary interior protection for your vehicles with an innovative, unique three-layer structure. The digitized three dimensional design measured to exact cabin contours of your vehicle for trapping mess and spills yet, patented anti-skid backing keeps mats in place without harming the original carpet. Choices of stylish carbon fiber texture rubber surface or classic looped fabric surface.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMAXpider® Btm Layer Keeps Mat in Place w\/o Harming Orig. Carpet\u003c\/li\u003e\n\u003cli\u003e3D Digitized Design Matches Each Vehicle Application\u003c\/li\u003e\n\u003cli\u003eWaterproof - Effectively Protects Vehicles Interior\u003c\/li\u003e\n\u003cli\u003eShock and Sound Absorbent Inner Layer\u003c\/li\u003e\n\u003cli\u003eRaised Edges Give Maximum Coverage\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis Part Fits:\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2023\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003eLS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003eLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003eLT1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003eSS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2024\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003eZL1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"3D MAXpider","offers":[{"title":"Default Title","offer_id":41164690194480,"sku":"ACEM1CH0691309","price":124.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/products\/d89611caf09af001725bc92023e3582e.jpg?v=1708624510"},{"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-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-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-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-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. 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 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.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers good for lowered C7 Corvettes?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. These headers are specifically engineered with improved ground clearance, making them a strong 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\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. 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 with no cutting, welding, or modifications required.\"}},{\"@type\":\"Question\",\"name\":\"What engines is this X-pipe compatible with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This 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.\"}},{\"@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":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-2005-2013-c6-corvette-2-longtube-headers-ls2-ls3-ls7","title":"Speed Engineering 2\" Longtube Headers — 2005–2013 Chevrolet C6 Corvette | LS2\/LS3\/LS6\/LS7 6.0L\/6.2L | 25-1068","description":"\u003cp\u003eThe factory exhaust manifolds on your C6 Corvette are leaving power on the table. 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. 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-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. 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.\"}}, {\"@type\": \"Question\", \"name\": \"Is this compatible with a differential cooler?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No, this exhaust will not work with vehicles equipped with a differential cooler.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need other Speed Engineering parts for a complete bolt-on kit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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\/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-x-pipe-kit","title":"Speed Engineering Off-Road X-Pipe Kit — 1997–2004 Chevrolet C5 Corvette | LS1\/LS6 | 25-1089","description":"\u003cp\u003eConnecting your Speed Engineering longtube headers to the factory axle-back on your C5 Corvette? This is the X-pipe that completes the system. 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. 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 my factory exhaust manifolds?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This X-pipe is designed for use with Speed Engineering longtube headers only and is not compatible with factory exhaust manifolds.\"}},{\"@type\":\"Question\",\"name\":\"What size tubing does this X-pipe use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"3\\\" diameter, mandrel bent for consistent flow throughout. 3\\\" stainless band clamps are included for installation.\"}},{\"@type\":\"Question\",\"name\":\"Does this fit the C5 Z06?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. This X-pipe fits both the standard C5 Corvette (LS1) and the C5 Z06 (LS6) through the 2004 model year.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between this X-pipe and the C6 X-pipe kit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This 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.\"}},{\"@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":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-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-2007-2013-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-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-3in-single-exhaust-system","title":"Speed Engineering 3\" Single Exhaust System — 1999–2006 Chevrolet Silverado \u0026 GMC Sierra 1500 | 25-1071 ETA 10\/30\/26","description":"\u003cp\u003eLooking for a clean, well-built single exhaust upgrade for your 1999–2006 Silverado or Sierra? Speed Engineering's 3\" 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 at installation.\u003c\/p\u003e\n\u003cp\u003eDyno proven and designed to work with Speed Engineering's 1-3\/4\", 1-7\/8\", and 2\" truck longtube headers and Y-pipe. Also connects directly to factory exhaust connections.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3\" 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\" Stainless Band Clamps\u003c\/li\u003e\n\u003cli\u003eConnects to Factory Hanger Locations\u003c\/li\u003e\n\u003c\/ul\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\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 4.8L and 5.3L Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDesigned to Work with Speed Engineering 1-3\/4\", 1-7\/8\", and 2\" Longtube Headers and Y-Pipe\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAlso Compatible with Factory Exhaust Connections\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Fitment Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort bed only\u003c\/strong\u003e for standard installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLonger bed configurations\u003c\/strong\u003e can be accommodated by extending the connection pipe\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\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWheelbase Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSingle Cab Short Bed\u003c\/li\u003e\n\u003cli\u003eCrew Cab 5'8\" Short Bed\u003c\/li\u003e\n\u003cli\u003eExtra Cab 6' Short Bed\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) — Short Bed\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\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC Sierra 1500 (2WD\/4WD) — Short Bed\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\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eDoes this exhaust system work with Speed Engineering longtube headers?\u003c\/h5\u003e\n\u003cp\u003eYes. This system is designed to work with Speed Engineering's 1-3\/4\", 1-7\/8\", and 2\" truck longtube headers and Y-pipe. It also connects directly to factory exhaust connections.\u003c\/p\u003e\n\u003ch5\u003eWhich cab and bed configurations does this fit?\u003c\/h5\u003e\n\u003cp\u003eThis system fits Single Cab Short Bed, Crew Cab 5'8\" Short Bed, and Extra Cab 6' Short Bed configurations. Long bed trucks can be accommodated by extending the connection pipe.\u003c\/p\u003e\n\u003ch5\u003eWhat exit tip options are included?\u003c\/h5\u003e\n\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\n\u003ch5\u003eWill this fit my SUV or long bed truck?\u003c\/h5\u003e\n\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 pipe.\u003c\/p\u003e\n\u003ch5\u003eWhat engines is this compatible with?\u003c\/h5\u003e\n\u003cp\u003eThis system is compatible with 4.8L and 5.3L engines found in 1999–2006 Chevrolet Silverado and GMC Sierra 1500 models.\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 full TIG-welded construction.\u003c\/p\u003e\n\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\\\", 1-7\/8\\\", and 2\\\" truck longtube headers and Y-pipe. It also connects directly to factory exhaust connections.\"}}, {\"@type\": \"Question\", \"name\": \"Which cab and bed configurations does this fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This system fits Single Cab Short Bed, Crew Cab 5'8\\\" Short Bed, and Extra Cab 6' Short Bed configurations. Long bed trucks can be accommodated by extending the connection pipe.\"}}, {\"@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\": \"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 pipe.\"}}, {\"@type\": \"Question\", \"name\": \"What engines is this compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This system is compatible with 4.8L and 5.3L engines found in 1999–2006 Chevrolet Silverado and GMC Sierra 1500 models.\"}}, {\"@type\": \"Question\", \"name\": \"What material is this exhaust system made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 natural stainless steel with mandrel-bent tubing and full TIG-welded construction.\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41228285247536,"sku":"25-1071","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1999_2006_Silverado_Sierra_3_Single_Exhaust_System_25-1071.png?v=1762214226"},{"product_id":"speed-engineering-2006-2009-trailblazer-ss-1-7-8in-longtube-headers-6-0-ls2","title":"Speed Engineering 1-7\/8\" Longtube Headers — 2006–2009 Chevrolet Trailblazer SS | 6.0L LS2 | 25-1041","description":"\u003cp\u003eThe factory exhaust manifolds on your Trailblazer SS are one of the first restrictions holding back your LS2. 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 a merge spike for maximum exhaust flow and over 25 rear-wheel horsepower over stock. Fits both AWD and RWD Trailblazer SS configurations.\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 1-7\/8\" Primary Tubes\u003c\/strong\u003e — Maximum flow from cylinder head to collector for aggressive LS2 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\u003eMerge Spike\u003c\/strong\u003e — Improved exhaust scavenging\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\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 LS2 applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 6.0L LS2 Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFits Both AWD and RWD Configurations\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 Trailblazer SS — LS2 6.0L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2006 Chevrolet Trailblazer SS (AWD\/RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Trailblazer SS (AWD\/RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Trailblazer SS (AWD\/RWD) — 6.0L LS2\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Trailblazer SS (AWD\/RWD) — 6.0L LS2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eDo these headers fit both AWD and RWD Trailblazer SS models?\u003c\/h5\u003e\n\u003cp\u003eYes. These headers fit both AWD and RWD Trailblazer SS configurations.\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 Trailblazer SS LS2 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 a merge spike.\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\": \"Do these headers fit both AWD and RWD Trailblazer SS models?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. These headers fit both AWD and RWD Trailblazer SS configurations.\"}}, {\"@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 Trailblazer SS LS2 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 a merge spike.\"}}, {\"@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":41231171289136,"sku":"25-1041","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2006_2009_Trailblazer_SS_1-7_8_Longtube_Headers_LS2_25-1041.jpg?v=1762214962"},{"product_id":"speed-engineering-2006-2009-trailblazer-ss-cat-back-exhaust-system","title":"Speed Engineering Cat-Back Exhaust System — 2006–2009 Chevrolet Trailblazer SS \/ TBSS 6.0L LS | 25-1069","description":"\u003cp\u003eUpgrade the exhaust on your Trailblazer SS or TBSS with Speed Engineering's 3\" cat-back system. Built from 304 natural stainless steel with mandrel-bent tubing and TIG-welded construction, this system works with both the factory manifolds and cats or Speed Engineering longtube headers and Y-pipe — making it a versatile upgrade whether you're building the exhaust system in stages or doing it all at once. Includes a single 4\" exhaust tip and 3\" stainless band clamps. Dyno proven.\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\" Mandrel Bent Tubing\u003c\/strong\u003e — Consistent diameter throughout for maximum exhaust flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks with Stock Manifolds and Catalytic Converters\u003c\/strong\u003e — Direct bolt-on to factory exhaust system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks with Speed Engineering Longtube Headers and Y-Pipe\u003c\/strong\u003e — Compatible whether building in stages or all at once\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSingle 4\" Exhaust Tip 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 and built to last\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 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\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 Trailblazer SS \/ TBSS — 6.0L LS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2006 Chevrolet Trailblazer SS (TBSS) — 6.0L LS\u003c\/li\u003e\n\u003cli\u003e2007 Chevrolet Trailblazer SS (TBSS) — 6.0L LS\u003c\/li\u003e\n\u003cli\u003e2008 Chevrolet Trailblazer SS (TBSS) — 6.0L LS\u003c\/li\u003e\n\u003cli\u003e2009 Chevrolet Trailblazer SS (TBSS) — 6.0L LS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill this exhaust system work with my factory manifolds?\u003c\/h5\u003e\n\u003cp\u003eYes. This cat-back system is designed to work with the factory exhaust manifolds and catalytic converters as a direct bolt-on upgrade on the Trailblazer SS and TBSS.\u003c\/p\u003e\n\u003ch5\u003eWill this also work with Speed Engineering longtube headers and Y-pipe?\u003c\/h5\u003e\n\u003cp\u003eYes. This system is compatible with Speed Engineering longtube headers and Y-pipe as well, making it a great choice whether you are building your exhaust system in stages or completing it all at once.\u003c\/p\u003e\n\u003ch5\u003eWhat size tubing does this system use?\u003c\/h5\u003e\n\u003cp\u003eAll tubing is 3\" diameter, mandrel bent for consistent flow throughout. A single 4\" exhaust tip and 3\" stainless band clamps are included.\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.\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\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 exhaust system work with my factory manifolds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This cat-back system is designed to work with the factory exhaust manifolds and catalytic converters as a direct bolt-on upgrade on the Trailblazer SS and TBSS.\"}}, {\"@type\": \"Question\", \"name\": \"Will this also work with Speed Engineering longtube headers and Y-pipe?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This system is compatible with Speed Engineering longtube headers and Y-pipe as well, making it a great choice whether you are building your exhaust system in stages or completing it all at once.\"}}, {\"@type\": \"Question\", \"name\": \"What size tubing does this system use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"All tubing is 3\\\" diameter, mandrel bent for consistent flow throughout. A single 4\\\" exhaust tip and 3\\\" stainless band clamps are included.\"}}, {\"@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.\"}}, {\"@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","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41231224078384,"sku":"25-1069","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_2006_2009_Trailblazer_SS_Cat-Back_Exhaust_System_25-1069.png?v=1762215142"},{"product_id":"speed-engineering-1-7-8-longtube-headers-for-pontiac-g8-chevrolet-ss-sedan-caprice-ppv-6-0l-6-2l-ls-engines-25-1073","title":"Speed Engineering 1-7\/8\" Longtube Headers for Pontiac G8, Chevrolet SS Sedan \u0026 Caprice PPV — 6.0L \/ 6.2L LS Engines | 25-1073","description":"\u003cp\u003eThe factory exhaust manifolds on your LS-powered Pontiac G8, Chevrolet SS Sedan, or Caprice PPV are a known restriction. Speed Engineering's 1-7\/8\" longtube headers are a direct-fit, dyno-proven replacement that unlocks real exhaust flow, improves throttle response, and puts measurable power back in your hands — over 25 rear-wheel horsepower gained over stock.\u003c\/p\u003e\n\u003cp\u003eEvery set is mandrel bent, TIG-welded, and built from 304 natural stainless steel with CNC-machined flanges. The fit is precise, the quality is there, and the price leaves room for your next build.\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 with Collector Spikes\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 flow 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 compared to shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClears Oil Cooler\u003c\/strong\u003e — No oil cooler relocation required on any listed application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Proven\u003c\/strong\u003e — 25+ RWHP gain documented on 6.0L and 6.2L LS applications\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\u003ePontiac G8\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2008 Pontiac G8 GT (RWD) — 6.0L L76\u003c\/li\u003e\n\u003cli\u003e2009 Pontiac G8 GT (RWD) — 6.0L L76\u003c\/li\u003e\n\u003cli\u003e2009 Pontiac G8 GXP (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet SS Sedan\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2014 Chevrolet SS Sedan (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet SS Sedan (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet SS Sedan (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet SS Sedan (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Caprice PPV\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2011 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eCaprice Note:\u003c\/strong\u003e X-pipe and true dual exhaust setups may require modifications for proper fitment on Caprice applications.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eHow much horsepower do these longtube 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 6.0L and 6.2L LS-equipped vehicles compared to stock exhaust manifolds.\u003c\/p\u003e\n\u003ch5\u003eWill these fit my Chevrolet Caprice PPV?\u003c\/h5\u003e\n\u003cp\u003eYes. These are a direct-fit application for 2011–2017 Chevrolet Caprice PPV models with the 6.0L L77 engine. X-pipe and true dual exhaust configurations may require minor modifications.\u003c\/p\u003e\n\u003ch5\u003eDo I need to relocate the oil cooler for installation?\u003c\/h5\u003e\n\u003cp\u003eNo. These headers are specifically engineered to clear the oil cooler on all listed applications with no relocation required.\u003c\/p\u003e\n\u003ch5\u003eWhat material are these headers made from?\u003c\/h5\u003e\n\u003cp\u003e304 stainless steel with full TIG-welded construction and CNC-machined 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\u003ch5\u003eWhat engines does part number 25-1073 fit?\u003c\/h5\u003e\n\u003cp\u003ePart #25-1073 fits GM 6.0L LS2, L76, and L77 engines and the 6.2L LS3, covering the Pontiac G8 GT\/GXP, Chevrolet SS Sedan, and Chevrolet Caprice PPV.\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 longtube 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 6.0L and 6.2L LS-equipped vehicles compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit my Chevrolet Caprice PPV?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. These are a direct-fit application for 2011–2017 Chevrolet Caprice PPV models with the 6.0L L77 engine. X-pipe and true dual exhaust configurations may require minor modifications.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to relocate the oil cooler for installation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are specifically engineered to clear the oil cooler on all listed applications with no relocation required.\"}}, {\"@type\": \"Question\", \"name\": \"What material are these headers made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"304 stainless steel with full TIG-welded construction and CNC-machined 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)).\"}}, {\"@type\": \"Question\", \"name\": \"What engines does part number 25-1073 fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Part #25-1073 fits GM 6.0L LS2, L76, and L77 engines and the 6.2L LS3, covering the Pontiac G8 GT\/GXP, Chevrolet SS Sedan, and Chevrolet Caprice PPV.\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41231307374640,"sku":"25-1073","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_Pontiac_G8_Chevrolet_SS_Caprice_1-7_8_Longtube_Headers_6.0_6.2_Engines_25-1073.png?v=1762215451"},{"product_id":"speed-engineering-pontiac-g8-chevrolet-ss-caprice-x-pipe-6-0l-6-2l","title":"Speed Engineering X-Pipe — 2008–2009 Pontiac G8 \/ 2014–2017 Chevrolet SS Sedan \/ 2011–2017 Chevrolet Caprice PPV | 6.0L\/6.2L | 25-1074","description":"\u003cp\u003eConnecting your Speed Engineering longtube headers to the existing axle-back on your G8, SS Sedan, or Caprice PPV? This is the X-pipe that completes the system. Built from 3\" mandrel bent 304 natural stainless steel with TIG-welded construction and band clamps included — designed specifically for Speed Engineering longtube headers.\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\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\u003eCaprice PPV applications require modifications at the axle-back connection\u003c\/strong\u003e for proper 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\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\u003eBand 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 6.0L 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\u003ePontiac G8 — 6.0L\/6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2008 Pontiac G8 GT (RWD) — 6.0L L76\u003c\/li\u003e\n\u003cli\u003e2009 Pontiac G8 GT (RWD) — 6.0L L76\u003c\/li\u003e\n\u003cli\u003e2009 Pontiac G8 GXP (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet SS Sedan — 6.2L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2014 Chevrolet SS Sedan (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet SS Sedan (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet SS Sedan (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet SS Sedan (RWD) — 6.2L LS3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Caprice PPV — 6.0L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2011 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Caprice PPV (RWD) — 6.0L L77\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill this X-pipe work with factory exhaust manifolds?\u003c\/h5\u003e\n\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\n\u003ch5\u003eDo Caprice PPV applications require any special modifications?\u003c\/h5\u003e\n\u003cp\u003eYes. Caprice PPV applications require modifications at the axle-back connection for proper installation of this X-pipe.\u003c\/p\u003e\n\u003ch5\u003eDoes this X-pipe pair with the Speed Engineering longtube headers for these platforms?\u003c\/h5\u003e\n\u003cp\u003eYes. This X-pipe is designed to pair with the Speed Engineering 2\" longtube headers (25-1136) for the G8, SS Sedan, and Caprice PPV.\u003c\/p\u003e\n\u003ch5\u003eWhat size tubing does this X-pipe use?\u003c\/h5\u003e\n\u003cp\u003e3\" diameter, mandrel bent for consistent flow throughout. Band clamps are included for installation.\u003c\/p\u003e\n\u003ch5\u003eWhat material is this X-pipe made from?\u003c\/h5\u003e\n\u003cp\u003e304 natural stainless steel with mandrel-bent tubing and TIG-welded construction.\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\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 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\": \"Do Caprice PPV applications require any special modifications?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Caprice PPV applications require modifications at the axle-back connection for proper installation of this X-pipe.\"}}, {\"@type\": \"Question\", \"name\": \"Does this X-pipe pair with the Speed Engineering longtube headers for these platforms?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This X-pipe is designed to pair with the Speed Engineering 2\\\" longtube headers (25-1136) for the G8, SS Sedan, and Caprice PPV.\"}}, {\"@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","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41231354069040,"sku":"25-1074","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_Pontiac_G8_Chevrolet_SS_Caprice_X-Pipe_6.0L_6.2L_Engines_25-1074.png?v=1762215612"},{"product_id":"speed-engineering-1982-1992-camaro-firebird-ls-swap-ls1-lsa-1-7-8-longtube-headers","title":"Speed Engineering LS Swap 1-7\/8\" Longtube Headers — 1982–1992 Chevrolet Camaro \u0026 Pontiac Firebird\/Trans Am | LS1\/LS2\/LS3\/LS6\/LSA | 25-1035","description":"\u003cp\u003eDropping an LS into your 3rd Gen Camaro or Firebird? Speed Engineering's 1-7\/8\" LS swap longtube headers are engineered specifically for the 1982–1992 third-gen F-body platform — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel with a merge spike and standard graphite manifold gaskets included. Compatible with the full LS engine family from 4.8L through 6.2L including LS1, LS2, LS3, LS6, and LSA. Dyno proven.\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\u003eLS swap applications only\u003c\/strong\u003e — these headers are NOT compatible with standard SBC or BBC engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L80E or older Turbo 350\/400 transmission\u003c\/strong\u003e — bellhousing ears may need to be trimmed for proper 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\u003eFull 1-7\/8\" Primary Tubes with Merge Spike\u003c\/strong\u003e — Maximum flow from cylinder head to collector for aggressive LS swap 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 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\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\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 LS 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\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All applications listed are LS swap conversions. These headers are not compatible with the original factory engines in these vehicles.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro — 3rd Gen F-Body (RWD) — LS Swap\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1982 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1983 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1984 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1985 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1986 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1987 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1988 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1989 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1990 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1991 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1992 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Firebird \u0026amp; Trans Am — 3rd Gen F-Body (RWD) — LS Swap\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1982 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1983 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1984 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1985 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1986 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1987 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1988 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1989 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1990 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1991 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1992 Pontiac Firebird\/Trans Am (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill these headers work with my SBC or BBC engine?\u003c\/h5\u003e\u003cp\u003eNo. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between these headers and the 1993–1997 LT1 longtube headers (25-1019)?\u003c\/h5\u003e\u003cp\u003ePart 25-1035 is for 1982–1992 3rd Gen Camaro and Firebird LS swap conversions. Part 25-1019 is for 1993–1997 4th Gen Camaro and Firebird with the factory Gen 2 LT1 engine — a completely different chassis and engine generation. Make sure to select the correct headers for your vehicle and engine combination.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between these headers and the 1998–2002 Camaro\/Firebird LS1 headers (25-1020)?\u003c\/h5\u003e\u003cp\u003ePart 25-1035 is for 1982–1992 3rd Gen F-body LS swap conversions. Part 25-1020 is for 1998–2002 4th Gen Camaro and Firebird with the factory LS1 engine.\u003c\/p\u003e\n\u003ch5\u003eWill these fit with a 4L80E or older Turbo 350\/400 transmission?\u003c\/h5\u003e\u003cp\u003eThese headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\u003c\/p\u003e\n\u003ch5\u003eWhat LS engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible 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 material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and a merge spike.\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\": \"Will these headers work with my SBC or BBC engine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between these headers and the 1993–1997 LT1 longtube headers (25-1019)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Part 25-1035 is for 1982–1992 3rd Gen Camaro and Firebird LS swap conversions. Part 25-1019 is for 1993–1997 4th Gen Camaro and Firebird with the factory Gen 2 LT1 engine — a completely different chassis and engine generation. Make sure to select the correct headers for your vehicle and engine combination.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between these headers and the 1998–2002 Camaro\/Firebird LS1 headers (25-1020)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Part 25-1035 is for 1982–1992 3rd Gen F-body LS swap conversions. Part 25-1020 is for 1998–2002 4th Gen Camaro and Firebird with the factory LS1 engine.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit with a 4L80E or older Turbo 350\/400 transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\"}}, {\"@type\": \"Question\", \"name\": \"What LS 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, 6.2L, LS1, LS2, LS3, LS6, and LSA.\"}}, {\"@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 a merge spike.\"}}, {\"@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":41241967755312,"sku":"25-1035","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_1982_1992_Camaro_Firebird_LS_Swap_1-7_8_Longtube_Headers_LS1_LS2_LS3_LS6_LSA_25-1035.jpg?v=1762205486"},{"product_id":"speed-engineering-lt-swap-1-7-8in-longtube-headers-a-body-f-body-x-body-lt1-lt4","title":"Speed Engineering 1-7\/8\" LT Swap Longtube Headers — A-Body, F-Body \u0026 X-Body | Gen V LT1\/LT4 5.3L\/6.2L | 25-1058","description":"\u003cp\u003eDropping a Gen V LT engine into your classic Camaro, Chevelle, Nova, or other classic GM platform? Speed Engineering's 1-7\/8\" LT swap longtube headers are built specifically for these applications — mandrel bent, TIG-welded, and CNC-machined for a precise fit across the most popular classic GM LT conversion platforms. Compatible with 5.3L and 6.2L LT1 and LT4 engines. Dyno proven and built from 304 natural stainless steel with a merge spike and standard graphite manifold gaskets included.\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\u003eGen V LT direct injection engine swaps only\u003c\/strong\u003e — these headers are NOT compatible with SBC or BBC engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm your vehicle is an A-body chassis before purchasing\u003c\/strong\u003e — some models were also produced in G-body applications and will have fitment issues on a G-body platform\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDue to older vehicle frame clearance, headers fit very tight and require Speed Engineering LT spark plug wires\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLT4 engines\u003c\/strong\u003e may require an oil cooler adapter or delete kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L80E or older Turbo 350\/400 transmission\u003c\/strong\u003e — bellhousing ears may need to be trimmed for proper clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Installed photos show 1-7\/8\" headers with 1\" offset back motor mounts\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\u003e1-7\/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 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\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\u003cstrong\u003eDyno Proven\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 LT 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\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All applications listed are Gen V LT swap conversions. These headers are not compatible with the original factory engines in these vehicles.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Camaro — F-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1970 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1971 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1972 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet Camaro (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Firebird — F-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1970 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1971 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1972 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1973 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1974 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1975 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1976 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1977 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1980 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1981 Pontiac Firebird (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Chevelle — A-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1965 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1966 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1967 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1968 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1969 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1970 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1971 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1972 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet Chevelle (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Nova — X-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1975 Chevrolet Nova (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet Nova (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet Nova (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet Nova (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet Nova (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet El Camino — A-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1965 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1966 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1967 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1968 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1969 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1970 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1971 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1972 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet El Camino (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Monte Carlo — A-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1970 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1971 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1972 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet Monte Carlo (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac LeMans — A-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1965 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1966 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1967 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1968 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1969 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1970 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1971 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1972 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1973 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1974 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1975 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1976 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1977 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1980 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1981 Pontiac LeMans (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac GTO — A-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Pontiac GTO (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1965 Pontiac GTO (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1966 Pontiac GTO (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1967 Pontiac GTO (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1968 Pontiac GTO (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1969 Pontiac GTO (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1970 Pontiac GTO (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1971 Pontiac GTO (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1972 Pontiac GTO (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Grand Prix — A-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1977 Pontiac Grand Prix (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac Grand Prix (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac Grand Prix (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1980 Pontiac Grand Prix (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1981 Pontiac Grand Prix (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOldsmobile Cutlass — A-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1965 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1966 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1967 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1968 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1969 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1970 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1971 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1972 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1973 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1974 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1975 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1976 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1977 Oldsmobile Cutlass (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBuick Skylark — A-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Buick Skylark (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1965 Buick Skylark (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1966 Buick Skylark (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1967 Buick Skylark (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1968 Buick Skylark (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1969 Buick Skylark (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1970 Buick Skylark (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1971 Buick Skylark (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1972 Buick Skylark (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBuick Grand National — G-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1978 Buick Grand National (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1979 Buick Grand National (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1980 Buick Grand National (RWD) — LT Swap\u003c\/li\u003e\n\u003cli\u003e1981 Buick Grand National (RWD) — LT Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eChassis Note:\u003c\/strong\u003e Confirm your vehicle is an A-body or F-body chassis before purchasing. Some models were also produced in G-body applications and will have fitment issues on a G-body platform.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill these headers work with my SBC or BBC engine?\u003c\/h5\u003e\u003cp\u003eNo. These headers are designed for Gen V LT direct injection engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\u003c\/p\u003e\n\u003ch5\u003eDo I need special spark plug wires?\u003c\/h5\u003e\u003cp\u003eYes. Due to tight frame clearance on older vehicle platforms, Speed Engineering LT spark plug wires are required for proper fitment with these headers.\u003c\/p\u003e\n\u003ch5\u003eWill my vehicle have fitment issues if it is a G-body?\u003c\/h5\u003e\u003cp\u003eYes. These headers are designed for A-body and F-body chassis applications. Some vehicle models were produced in both A-body and G-body configurations — confirm your chassis type before purchasing as fitment issues will occur on G-body applications.\u003c\/p\u003e\n\u003ch5\u003eWill these work with my LT4 engine?\u003c\/h5\u003e\u003cp\u003eYes, but the LT4 engine may require an oil cooler adapter or delete kit for proper fitment with these headers.\u003c\/p\u003e\n\u003ch5\u003eWill these fit with a 4L80E or older Turbo 350\/400 transmission?\u003c\/h5\u003e\u003cp\u003eThese headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\u003c\/p\u003e\n\u003ch5\u003eWhat engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible with GM Gen V LT V8 engines including 5.3L, 6.2L, LT1, and LT4.\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 a merge spike.\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\": \"Will these headers work with my SBC or BBC engine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed for Gen V LT direct injection engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need special spark plug wires?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Due to tight frame clearance on older vehicle platforms, Speed Engineering LT spark plug wires are required for proper fitment with these headers.\"}}, {\"@type\": \"Question\", \"name\": \"Will my vehicle have fitment issues if it is a G-body?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. These headers are designed for A-body and F-body chassis applications. Some vehicle models were produced in both A-body and G-body configurations — confirm your chassis type before purchasing as fitment issues will occur on G-body applications.\"}}, {\"@type\": \"Question\", \"name\": \"Will these work with my LT4 engine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, but the LT4 engine may require an oil cooler adapter or delete kit for proper fitment with these headers.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit with a 4L80E or older Turbo 350\/400 transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these headers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers are compatible with GM Gen V LT V8 engines including 5.3L, 6.2L, LT1, and LT4.\"}}, {\"@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 a merge spike.\"}}, {\"@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\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":41241999081520,"sku":"25-1058","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_LT_Swap_1-7_8_Longtube_Headers_A-Body_F-Body_X-Body_LT1_LT4_Engines_25-1058.png?v=1762269803"},{"product_id":"speed-engineering-ls-swap-1-7-8in-longtube-headers-a-body-f-body-x-body-ls1-lsa","title":"Speed Engineering LS Swap 1-7\/8\" Longtube Headers — A-Body, F-Body \u0026 X-Body | LS1\/LS2\/LS3\/LS6\/LSA | 25-1026","description":"\u003cp\u003eDropping an LS into your classic Camaro, Chevelle, Nova, GTO, or any number of popular GM A-body and F-body platforms? Speed Engineering's 1-7\/8\" LS swap longtube headers are engineered across the most popular classic GM chassis — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel with a merge spike and standard graphite manifold gaskets included. Compatible with the full LS engine family from 4.8L through 6.2L including LS1, LS2, LS3, LS6, and LSA.\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-body chassis only\u003c\/strong\u003e — confirm your vehicle is on the A-body chassis before ordering. Some model names (El Camino, Monte Carlo, Grand Prix, Cutlass) also came in G-body applications in certain years. These headers will have fitment issues on a G-body application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLS swap applications only\u003c\/strong\u003e — these headers are NOT compatible with standard SBC or BBC engines\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDue to older vehicle frame clearance, headers fit very tight and require Speed Engineering spark plug wires\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L80E or older Turbo 350\/400 transmission\u003c\/strong\u003e — bellhousing ears may need to be trimmed for proper clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Installed photos show 1-7\/8\" headers with 1\" offset back motor mounts\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 — Maximum flow from cylinder head to collector for aggressive LS swap 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 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\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\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 LS 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\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All applications listed are LS swap conversions. These headers are not compatible with the original factory engines in these vehicles. \u003cstrong\u003eA-body chassis only\u003c\/strong\u003e — will NOT fit G-body applications.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003eGM F-Body (RWD) — LS Swap\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChevrolet Camaro\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1970 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1971 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1972 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet Camaro (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePontiac Firebird\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1970 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1971 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1972 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1973 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1974 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1975 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1976 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1977 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1980 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1981 Pontiac Firebird (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGM A-Body (RWD) — LS Swap\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChevrolet Chevelle\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1965 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1966 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1967 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1968 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1969 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1970 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1971 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1972 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet Chevelle (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChevrolet El Camino\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1965 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1966 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1967 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1968 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1969 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1970 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1971 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1972 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet El Camino (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChevrolet Monte Carlo\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1970 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1971 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1972 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet Monte Carlo (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePontiac GTO\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Pontiac GTO (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1965 Pontiac GTO (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1966 Pontiac GTO (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1967 Pontiac GTO (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1968 Pontiac GTO (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1969 Pontiac GTO (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1970 Pontiac GTO (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1971 Pontiac GTO (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1972 Pontiac GTO (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePontiac LeMans\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1965 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1966 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1967 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1968 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1969 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1970 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1971 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1972 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1973 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1974 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1975 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1976 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1977 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1980 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1981 Pontiac LeMans (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePontiac Grand Prix\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1977 Pontiac Grand Prix (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac Grand Prix (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac Grand Prix (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1980 Pontiac Grand Prix (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1981 Pontiac Grand Prix (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOldsmobile Cutlass\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1965 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1966 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1967 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1968 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1969 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1970 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1971 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1972 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1973 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1974 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1975 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1976 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1977 Oldsmobile Cutlass (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBuick Skylark\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1964 Buick Skylark (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1965 Buick Skylark (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1966 Buick Skylark (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1967 Buick Skylark (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1968 Buick Skylark (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1969 Buick Skylark (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1970 Buick Skylark (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1971 Buick Skylark (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1972 Buick Skylark (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBuick Grand National\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1978 Buick Grand National (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1979 Buick Grand National (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1980 Buick Grand National (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003cli\u003e1981 Buick Grand National (RWD) — LS Swap ⚠️ A-body chassis only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGM X-Body (RWD) — LS Swap\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChevrolet Nova\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1975 Chevrolet Nova (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet Nova (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet Nova (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet Nova (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet Nova (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eHow do I know if my vehicle is an A-body or G-body?\u003c\/h5\u003e\u003cp\u003eThis is an important distinction. The A-body and G-body share several model names across different years. Generally, Chevelles, El Caminos (1964–1977), GTOs (1964–1972), and early Monte Carlos (1970–1977) are A-body. Later Monte Carlos (1978–1988), El Caminos (1978–1987), and Grand Prix (1978+) transitioned to the G-body platform. If you're unsure, verify your chassis code before ordering as these headers will have fitment issues on G-body applications.\u003c\/p\u003e\n\u003ch5\u003eWill these headers work with my SBC or BBC engine?\u003c\/h5\u003e\u003cp\u003eNo. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\u003c\/p\u003e\n\u003ch5\u003eDo I need special spark plug wires?\u003c\/h5\u003e\u003cp\u003eYes. Due to tight frame clearance on older classic GM platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.\u003c\/p\u003e\n\u003ch5\u003eWill these fit with a 4L80E or older Turbo 350\/400 transmission?\u003c\/h5\u003e\u003cp\u003eThese headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between these 1-7\/8\" headers and the 1-3\/4\" LS swap multi-platform headers (25-1066)?\u003c\/h5\u003e\u003cp\u003eThe primary tube diameter is the key difference. The 1-7\/8\" headers offer a step up in flow for more aggressive builds with supporting modifications. The 1-3\/4\" headers are a strong choice for most LS swap builds across a broad RPM range. Both cover similar classic GM platforms.\u003c\/p\u003e\n\u003ch5\u003eWhat LS engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible 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 material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and a merge spike.\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\": \"How do I know if my vehicle is an A-body or G-body?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This is an important distinction. The A-body and G-body share several model names across different years. Generally, Chevelles, El Caminos (1964–1977), GTOs (1964–1972), and early Monte Carlos (1970–1977) are A-body. Later Monte Carlos (1978–1988), El Caminos (1978–1987), and Grand Prix (1978+) transitioned to the G-body platform. If you're unsure, verify your chassis code before ordering as these headers will have fitment issues on G-body applications.\"}}, {\"@type\": \"Question\", \"name\": \"Will these headers work with my SBC or BBC engine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need special spark plug wires?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Due to tight frame clearance on older classic GM platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit with a 4L80E or older Turbo 350\/400 transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between these 1-7\/8\\\" headers and the 1-3\/4\\\" LS swap multi-platform headers (25-1066)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The primary tube diameter is the key difference. The 1-7\/8\\\" headers offer a step up in flow for more aggressive builds with supporting modifications. The 1-3\/4\\\" headers are a strong choice for most LS swap builds across a broad RPM range. Both cover similar classic GM platforms.\"}}, {\"@type\": \"Question\", \"name\": \"What LS 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, 6.2L, LS1, LS2, LS3, LS6, and LSA.\"}}, {\"@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 a merge spike.\"}}, {\"@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":41242009436208,"sku":"25-1026","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_LS_Swap_1-7_8_Longtube_Headers_A-Body_F-Body_X-Body_LS1_LS2_LS3_LS6_LSA_25-1026.png?v=1762270482"},{"product_id":"speed-engineering-ls-swap-1-7-8in-longtube-headers-1960-1987-c10-trucks-ls1-lsa","title":"Speed Engineering LS Swap 1-7\/8\" Longtube Headers — 1960–1987 Chevrolet C10 Truck (2WD) | LS1\/LS2\/LS3\/LS6\/LSA | 25-1026","description":"\u003cp\u003eDropping an LS into your classic C10? Speed Engineering's 1-7\/8\" LS swap longtube headers are engineered specifically for the 1960–1987 C10 platform with excellent ground clearance for air ride and lowered suspension applications — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel with merge spikes and standard graphite manifold gaskets included. Compatible with the full LS engine family from 4.8L through 6.2L including LS1, LS2, LS3, LS6, and LSA. These headers do not hang below the frame and have been confirmed to fit on Roadster Shop (with Pro spindles), Porterbuilt, Chevy's Block, and other front drop members with air ride and coil-over suspension.\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\u003cstrong\u003e2WD only — does NOT fit 4WD (K10)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1960–1966 model years require slider engine mounts\u003c\/strong\u003e to clear the front crossmember\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLS swap applications only\u003c\/strong\u003e — these headers are NOT compatible with standard SBC or BBC engines\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDue to older vehicle frame clearance, headers fit very tight and require Speed Engineering spark plug wires\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L80E or older Turbo 350\/400 transmission\u003c\/strong\u003e — bellhousing ears may need to be trimmed for proper 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\u003eFull 1-7\/8\" Primary Tubes with Merge Spike\u003c\/strong\u003e — Maximum flow from cylinder head to collector for aggressive LS swap 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 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\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent Ground Clearance\u003c\/strong\u003e — Engineered for air ride and lowered suspension applications, including popular aftermarket front clips\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 LS 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\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All applications listed are LS swap conversions for the 2WD C10. These headers are not compatible with the original factory engines in these vehicles and do NOT fit 4WD (K10) applications.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet C10 Truck (2WD, RWD) — LS Swap\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1960 Chevrolet C10 Truck (2WD) — LS Swap ⚠️ Requires slider engine mounts to clear front crossmember\u003c\/li\u003e\n\u003cli\u003e1961 Chevrolet C10 Truck (2WD) — LS Swap ⚠️ Requires slider engine mounts to clear front crossmember\u003c\/li\u003e\n\u003cli\u003e1962 Chevrolet C10 Truck (2WD) — LS Swap ⚠️ Requires slider engine mounts to clear front crossmember\u003c\/li\u003e\n\u003cli\u003e1963 Chevrolet C10 Truck (2WD) — LS Swap ⚠️ Requires slider engine mounts to clear front crossmember\u003c\/li\u003e\n\u003cli\u003e1964 Chevrolet C10 Truck (2WD) — LS Swap ⚠️ Requires slider engine mounts to clear front crossmember\u003c\/li\u003e\n\u003cli\u003e1965 Chevrolet C10 Truck (2WD) — LS Swap ⚠️ Requires slider engine mounts to clear front crossmember\u003c\/li\u003e\n\u003cli\u003e1966 Chevrolet C10 Truck (2WD) — LS Swap ⚠️ Requires slider engine mounts to clear front crossmember\u003c\/li\u003e\n\u003cli\u003e1967 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1968 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1969 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1970 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1971 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1972 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1982 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1983 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1984 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1985 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1986 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1987 Chevrolet C10 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill these headers fit my K10 4WD truck?\u003c\/h5\u003e\u003cp\u003eNo. These headers do NOT fit 4WD applications. They are designed for 2WD C10 trucks only.\u003c\/p\u003e\n\u003ch5\u003eDo these headers work with air ride or lowered suspension?\u003c\/h5\u003e\u003cp\u003eYes. These headers do not hang below the frame and offer excellent ground clearance for air ride and lowered suspension applications. They have been confirmed to fit on Roadster Shop (with Pro spindles), Porterbuilt, Chevy's Block, and other popular aftermarket front clips with air ride and coil-over suspension.\u003c\/p\u003e\n\u003ch5\u003eDo 1960–1966 trucks need anything special?\u003c\/h5\u003e\u003cp\u003eYes. 1960–1966 model years require slider engine mounts to clear the front crossmember.\u003c\/p\u003e\n\u003ch5\u003eWill these headers work with my SBC or BBC engine?\u003c\/h5\u003e\u003cp\u003eNo. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\u003c\/p\u003e\n\u003ch5\u003eDo I need special spark plug wires?\u003c\/h5\u003e\u003cp\u003eYes. Due to tight frame clearance on classic C10 platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.\u003c\/p\u003e\n\u003ch5\u003eWill these fit with a 4L80E or older Turbo 350\/400 transmission?\u003c\/h5\u003e\u003cp\u003eThese headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between these headers and the SBC C10\/K10 longtubes (25-1236)?\u003c\/h5\u003e\u003cp\u003ePart 25-1026 is for LS engine swaps on 2WD C10 trucks only, with 1-7\/8\" primaries optimized for ground clearance on lowered and air ride builds. Part 25-1236 is for small block Chevy (SBC) applications and fits both 2WD C10 and 4WD K10. Make sure you select headers matching your engine family and drivetrain.\u003c\/p\u003e\n\u003ch5\u003eWhat LS engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible 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 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.\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\": \"Will these headers fit my K10 4WD truck?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers do NOT fit 4WD applications. They are designed for 2WD C10 trucks only.\"}}, {\"@type\": \"Question\", \"name\": \"Do these headers work with air ride or lowered suspension?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. These headers do not hang below the frame and offer excellent ground clearance for air ride and lowered suspension applications. They have been confirmed to fit on Roadster Shop (with Pro spindles), Porterbuilt, Chevy's Block, and other popular aftermarket front clips with air ride and coil-over suspension.\"}}, {\"@type\": \"Question\", \"name\": \"Do 1960–1966 trucks need anything special?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 1960–1966 model years require slider engine mounts to clear the front crossmember.\"}}, {\"@type\": \"Question\", \"name\": \"Will these headers work with my SBC or BBC engine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need special spark plug wires?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Due to tight frame clearance on classic C10 platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit with a 4L80E or older Turbo 350\/400 transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between these headers and the SBC C10\/K10 longtubes (25-1236)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Part 25-1026 is for LS engine swaps on 2WD C10 trucks only, with 1-7\/8\\\" primaries optimized for ground clearance on lowered and air ride builds. Part 25-1236 is for small block Chevy (SBC) applications and fits both 2WD C10 and 4WD K10. Make sure you select headers matching your engine family and drivetrain.\"}}, {\"@type\": \"Question\", \"name\": \"What LS 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, 6.2L, LS1, LS2, LS3, LS6, and LSA.\"}}, {\"@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\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":41242108657712,"sku":"25-1026","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_LS_Swap_1-7_8_Longtube_Headers_1960_1987_C10_Trucks_LS1_LS2_LS3_LS6_LSA_25-1026.png?v=1762272641"},{"product_id":"speed-engineering-ls-swap-1-3-4in-longtube-headers-1960-1987-c10-trucks-ls1-lsa","title":"Speed Engineering LS Swap 1-3\/4\" Longtube Headers — 1960–1987 Chevrolet C10 Truck | LS1\/LS2\/LS3\/LS6\/LSA | 25-1025","description":"\u003cp\u003eDropping an LS into your C10? Speed Engineering's 1-3\/4\" LS swap longtube headers are built specifically for the classic C10 platform — mandrel bent, TIG-welded, and CNC-machined for a precise, port-matched fit across the full 1960–1987 C10 run. One of the standout features of this header is the ground clearance design — the headers do not hang below the frame, making them a great choice for lowered builds and air ride applications. Tested and confirmed to work on factory chassis as well as Choppin Block, Roadster Shop (with Pro spindles), Porterbuilt, and other aftermarket front drop members with air ride and coilover suspension. Compatible with the full LS engine family from 4.8L through 6.2L including LS1, LS2, LS3, LS6, and LSA. Dyno proven.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with a merge spike and standard graphite manifold gaskets included.\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\u003e1960–1966 C10 applications require slider engine mounts\u003c\/strong\u003e to clear the front crossmember\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2WD applications only — will NOT fit 4WD C10 trucks\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLS swap applications only\u003c\/strong\u003e — these headers are NOT compatible with standard SBC or BBC engines\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDue to older vehicle frame clearance, headers fit very tight and require Speed Engineering spark plug wires\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L80E or older Turbo 350\/400 transmission\u003c\/strong\u003e — bellhousing ears may need to be trimmed for proper 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\u003e1-3\/4\" 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 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\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeaders Do Not Hang Below the Frame\u003c\/strong\u003e — Engineered for excellent ground clearance on air ride and lowered applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks on Factory Chassis and Most Aftermarket Chassis\u003c\/strong\u003e — Tested on Choppin Block, Roadster Shop (with Pro spindles), Porterbuilt, and other front drop members\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 LS 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\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All applications listed are LS swap conversions. 2WD applications only — will NOT fit 4WD trucks. 1960–1966 applications require slider engine mounts to clear the front crossmember.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet C10 Truck (2WD) — LS Swap\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1960 Chevrolet C10 Truck (RWD) — LS Swap ⚠️ Requires slider engine mounts\u003c\/li\u003e\n\u003cli\u003e1961 Chevrolet C10 Truck (RWD) — LS Swap ⚠️ Requires slider engine mounts\u003c\/li\u003e\n\u003cli\u003e1962 Chevrolet C10 Truck (RWD) — LS Swap ⚠️ Requires slider engine mounts\u003c\/li\u003e\n\u003cli\u003e1963 Chevrolet C10 Truck (RWD) — LS Swap ⚠️ Requires slider engine mounts\u003c\/li\u003e\n\u003cli\u003e1964 Chevrolet C10 Truck (RWD) — LS Swap ⚠️ Requires slider engine mounts\u003c\/li\u003e\n\u003cli\u003e1965 Chevrolet C10 Truck (RWD) — LS Swap ⚠️ Requires slider engine mounts\u003c\/li\u003e\n\u003cli\u003e1966 Chevrolet C10 Truck (RWD) — LS Swap ⚠️ Requires slider engine mounts\u003c\/li\u003e\n\u003cli\u003e1967 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1968 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1969 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1970 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1971 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1972 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1982 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1983 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1984 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1985 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1986 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1987 Chevrolet C10 Truck (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eDo 1960–1966 C10s require any special motor mounts?\u003c\/h5\u003e\u003cp\u003eYes. 1960–1966 C10 applications require slider engine mounts to clear the front crossmember for proper header fitment.\u003c\/p\u003e\n\u003ch5\u003eWill these headers fit my 4WD C10?\u003c\/h5\u003e\u003cp\u003eNo. These headers are designed for 2WD C10 applications only and will not fit 4WD trucks.\u003c\/p\u003e\n\u003ch5\u003eAre these headers good for lowered or air ride C10 builds?\u003c\/h5\u003e\u003cp\u003eYes. These headers are specifically engineered so that they do not hang below the frame, making them an excellent choice for lowered builds and air ride applications. They have been tested on Choppin Block, Roadster Shop (with Pro spindles), Porterbuilt, and other aftermarket front drop members with air ride and coilover suspension.\u003c\/p\u003e\n\u003ch5\u003eWill these headers work with my SBC or BBC engine?\u003c\/h5\u003e\u003cp\u003eNo. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\u003c\/p\u003e\n\u003ch5\u003eDo I need special spark plug wires?\u003c\/h5\u003e\u003cp\u003eYes. Due to tight frame clearance on older C10 platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.\u003c\/p\u003e\n\u003ch5\u003eWill these fit with a 4L80E or older Turbo 350\/400 transmission?\u003c\/h5\u003e\u003cp\u003eThese headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\u003c\/p\u003e\n\u003ch5\u003eWhat LS engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible 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 material are these headers made from?\u003c\/h5\u003e\u003cp\u003e304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and a merge spike.\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\": \"Do 1960–1966 C10s require any special motor mounts?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 1960–1966 C10 applications require slider engine mounts to clear the front crossmember for proper header fitment.\"}}, {\"@type\": \"Question\", \"name\": \"Will these headers fit my 4WD C10?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed for 2WD C10 applications only and will not fit 4WD trucks.\"}}, {\"@type\": \"Question\", \"name\": \"Are these headers good for lowered or air ride C10 builds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. These headers are specifically engineered so that they do not hang below the frame, making them an excellent choice for lowered builds and air ride applications. They have been tested on Choppin Block, Roadster Shop (with Pro spindles), Porterbuilt, and other aftermarket front drop members with air ride and coilover suspension.\"}}, {\"@type\": \"Question\", \"name\": \"Will these headers work with my SBC or BBC engine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need special spark plug wires?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Due to tight frame clearance on older C10 platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit with a 4L80E or older Turbo 350\/400 transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\"}}, {\"@type\": \"Question\", \"name\": \"What LS 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, 6.2L, LS1, LS2, LS3, LS6, and LSA.\"}}, {\"@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 a merge spike.\"}}, {\"@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":41242110394416,"sku":"25-1025","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_LS_Swap_1-3_4_Longtube_Headers_1960_1987_C10_Trucks_LS1_LS2_LS3_LS6_LSA_25-1025.png?v=1762272806"},{"product_id":"speed-engineering-2015-2023-ford-mustang-5-0l-coyote-1-7-8-longtube-headers-xpipe-kit","title":"Speed Engineering 1-7\/8\" Longtube Headers \u0026 X-Pipe Full Kit — 2015–2023 Ford Mustang GT 5.0L Coyote | 25-1085","description":"\u003cp\u003eThe factory exhaust manifolds on your S550 Mustang GT are a known restriction. Speed Engineering's 1-7\/8\" longtube headers replace them with a free-flowing, direct-fit stainless system that unlocks real horsepower, improves throttle response, and gives your Coyote the exhaust note it deserves. Paired with a 3\" off-road X-pipe that connects directly to the existing axle-back location, this is a complete bolt-on system — everything you need is in the box.\u003c\/p\u003e\u003cp\u003eDyno proven to gain over 25 rear-wheel horsepower. Built from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined port-matched flanges, and full TIG-welded construction.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1 Pair of 1-7\/8\" Stainless Longtube Headers\u003c\/li\u003e\n\u003cli\u003e1 Three-inch Off-Road X-Pipe \/ Connection Pipe\u003c\/li\u003e\n\u003cli\u003e2 MLS Exhaust Gaskets\u003c\/li\u003e\n\u003cli\u003e2 O₂ Sensor Extension Harnesses\u003c\/li\u003e\n\u003c\/ul\u003e\u003cblockquote\u003e\u003cp\u003eOptional: Zinc Coated Header Bolts (M10x1.5) can be added at the time of purchase.\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\u003e1-7\/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 Collector Merge Spikes\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 Port-Matched 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 5.0L Coyote applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV8 Only\u003c\/strong\u003e — Compatible with 5.0L Coyote engines only\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eImportant Installation Notes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eO₂ sensor extension harnesses are required and included — upstream O₂ bungs will be located further back with longtube headers\u003c\/li\u003e\n\u003cli\u003eRear downstream O₂ sensors will no longer be used — a check engine light for catalyst efficiency will appear and must be disabled via PCM tuning\u003c\/li\u003e\n\u003cli\u003eHeader bolt thread pitch varies by Coyote generation — verify before installation:\u003cul\u003e\n\u003cli\u003eEarly Gen 1 (2011) and some Gen 3 (2018+): M10x1.25\u003c\/li\u003e\n\u003cli\u003eLate Gen 1 (2011) and Gen 2 (2015–2017): M10x1.5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFord Mustang GT — 5.0L Coyote (RWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2015 Ford Mustang GT (RWD) — 5.0L Coyote\u003c\/li\u003e\n\u003cli\u003e2016 Ford Mustang GT (RWD) — 5.0L Coyote\u003c\/li\u003e\n\u003cli\u003e2017 Ford Mustang GT (RWD) — 5.0L Coyote\u003c\/li\u003e\n\u003cli\u003e2018 Ford Mustang GT (RWD) — 5.0L Coyote\u003c\/li\u003e\n\u003cli\u003e2019 Ford Mustang GT (RWD) — 5.0L Coyote\u003c\/li\u003e\n\u003cli\u003e2020 Ford Mustang GT (RWD) — 5.0L Coyote\u003c\/li\u003e\n\u003cli\u003e2021 Ford Mustang GT (RWD) — 5.0L Coyote\u003c\/li\u003e\n\u003cli\u003e2022 Ford Mustang GT (RWD) — 5.0L Coyote\u003c\/li\u003e\n\u003cli\u003e2023 Ford Mustang GT (RWD) — 5.0L Coyote\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat is included in this kit?\u003c\/h5\u003e\u003cp\u003eThe kit includes a pair of 1-7\/8\" stainless longtube headers, a 3\" off-road X-pipe, two MLS exhaust gaskets, and two O₂ sensor extension harnesses. Zinc coated header bolts (M10x1.5) are available as an optional add-on at the time of purchase.\u003c\/p\u003e\u003ch5\u003eWill I get a check engine light after installing these headers?\u003c\/h5\u003e\u003cp\u003eYes. The rear downstream O₂ sensors are no longer used with this system, which will trigger a catalyst efficiency code. This must be resolved through PCM tuning — it cannot be cleared by simply resetting the ECU.\u003c\/p\u003e\u003ch5\u003eDo I need O₂ sensor extensions?\u003c\/h5\u003e\u003cp\u003eYes, and they are included in the kit. The upstream O₂ sensor bungs are positioned further back with longtube headers, so extensions are required for proper sensor placement.\u003c\/p\u003e\u003ch5\u003eHow much horsepower do these headers add to a 5.0L Coyote Mustang?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's 1-7\/8\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 5.0L Coyote applications compared to stock exhaust manifolds.\u003c\/p\u003e\u003ch5\u003eWhat header bolt size do I need for my Mustang GT?\u003c\/h5\u003e\u003cp\u003eIt depends on your Coyote generation. Early Gen 1 (2011) and some Gen 3 (2018+) engines use M10x1.25 bolts. Late Gen 1 (2011) and Gen 2 (2015–2017) engines use M10x1.5 bolts. Verify your thread pitch before installation.\u003c\/p\u003e\u003ch5\u003eWill these headers work with my existing axle-back exhaust?\u003c\/h5\u003e\u003cp\u003eYes. The 3\" X-pipe included in the kit connects directly to the factory axle-back location, making this a bolt-on system compatible with most aftermarket and stock axle-back setups.\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\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\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is included in this kit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The kit includes a pair of 1-7\/8\\\" stainless longtube headers, a 3\\\" off-road X-pipe, two MLS exhaust gaskets, and two O₂ sensor extension harnesses. Zinc coated header bolts (M10x1.5) are available as an optional add-on at the time of purchase.\"}}, {\"@type\": \"Question\", \"name\": \"Will I get a check engine light after installing these headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The rear downstream O₂ sensors are no longer used with this system, which will trigger a catalyst efficiency code. This must be resolved through PCM tuning — it cannot be cleared by simply resetting the ECU.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need O₂ sensor extensions?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, and they are included in the kit. The upstream O₂ sensor bungs are positioned further back with longtube headers, so extensions are required for proper sensor placement.\"}}, {\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add to a 5.0L Coyote Mustang?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-7\/8\\\" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 5.0L Coyote applications compared to stock exhaust manifolds.\"}}, {\"@type\": \"Question\", \"name\": \"What header bolt size do I need for my Mustang GT?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It depends on your Coyote generation. Early Gen 1 (2011) and some Gen 3 (2018+) engines use M10x1.25 bolts. Late Gen 1 (2011) and Gen 2 (2015–2017) engines use M10x1.5 bolts. Verify your thread pitch before installation.\"}}, {\"@type\": \"Question\", \"name\": \"Will these headers work with my existing axle-back exhaust?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The 3\\\" X-pipe included in the kit connects directly to the factory axle-back location, making this a bolt-on system compatible with most aftermarket and stock axle-back setups.\"}}, {\"@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":"2015-2017 \/ Do Not Add","offer_id":42496624820272,"sku":"25-1085","price":769.96,"currency_code":"USD","in_stock":true},{"title":"2015-2017 \/ Add Zinc Coated Header Bolts (M10x1.5)","offer_id":43249559207984,"sku":null,"price":779.95,"currency_code":"USD","in_stock":true},{"title":"2018-2023 \/ Do Not Add","offer_id":42496624853040,"sku":"25-1085","price":769.96,"currency_code":"USD","in_stock":true},{"title":"2018-2023 \/ Add Zinc Coated Header Bolts (M10x1.5)","offer_id":43249559240752,"sku":null,"price":779.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/2015-2017_Mustang_FULL_KIT.jpg?v=1771863839"},{"product_id":"turbosmart-opr-v2-turbo-oil-pressure-regulator","title":"Turbosmart OPR V2 Turbo Oil Pressure Regulator","description":"Turbosmart OPR V2 Turbo Oil Pressure Regulator","brand":"Turbosmart","offers":[{"title":"Default Title","offer_id":41274588790832,"sku":"TURTS-0811-0012","price":170.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/c8ef1ffa4e2d4f76de89ae015e20dfb3.jpg?v=1712372954"},{"product_id":"lokar-36in-replacement-throttl-cable-inner-wire-wca-1041","title":"Lokar 36in Replacement Throttl Cable Inner Wire WCA-1041","description":"Throttle Cable - Inner Wire - Replacement - 36 in Long - Steel - Each\u003cp\u003e\u003cbr\u003eLokar 36in Replacement Throttl Cable Inner Wire WCA-1041\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Lokar","offers":[{"title":"Default Title","offer_id":41299329679408,"sku":"BHFX_WCA-1041","price":33.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/LOKWCA-1041.jpg?v=1712802021"},{"product_id":"dart-11-32-exhaust-valve-sbc-1-600-21311600","title":"Dart 11\/32 Exhaust Valve - SBC 1.600 21311600","description":"Exhaust Valve - 1.600 in Head - 11\/32 in Valve Stem - Stainless - Small Block Chevy - Each\u003cp\u003e\u003cbr\u003eDart 11\/32 Exhaust Valve - SBC 1.600 21311600\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Dart","offers":[{"title":"Default Title","offer_id":41300154515504,"sku":"BGWK_21311600","price":18.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/DRT21311600.jpg?v=1712850082"},{"product_id":"accelerator-pump-nozzle-0-035","title":"Quick Fuel Accelerator Pump Discharge Nozzle .035\" | .035\" Squirter, Sold Each | 21-35QFT","description":"\u003cp\u003eThis Quick Fuel accelerator pump discharge nozzle has a .035 inch orifice and a streamlined design that reduces pull-over at high RPM. Each squirter is stamped for identification, is sold individually, and includes replacement gaskets.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOrifice size: .035 inch\u003c\/li\u003e\n\u003cli\u003eStreamlined design reduces high-RPM pull-over\u003c\/li\u003e\n\u003cli\u003eStamped for identification\u003c\/li\u003e\n\u003cli\u003eSold individually, includes replacement gaskets\u003c\/li\u003e\n\u003cli\u003ePart number: 21-35QFT\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat size is this discharge nozzle?\u003c\/h5\u003e\u003cp\u003eIt has a .035 inch orifice.\u003c\/p\u003e\u003ch5\u003eDoes it come with gaskets?\u003c\/h5\u003e\u003cp\u003eYes, each nozzle is sold individually and includes replacement gaskets.\u003c\/p\u003e\u003ch5\u003eHow do I identify the size later?\u003c\/h5\u003e\u003cp\u003eEach squirter is stamped for identification.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What size is this discharge nozzle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It has a .035 inch orifice.\"}}, {\"@type\": \"Question\", \"name\": \"Does it come with gaskets?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, each nozzle is sold individually and includes replacement gaskets.\"}}, {\"@type\": \"Question\", \"name\": \"How do I identify the size later?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each squirter is stamped for identification.\"}}]}\u003c\/script\u003e","brand":"Quick Fuel Technology","offers":[{"title":"Default Title","offer_id":41305539313712,"sku":"BJVK_21-35QFT","price":16.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/QFT21-35.jpg?v=1712928082"},{"product_id":"melling-oil-pump-ford-5-4l-mod-motor-hi-volume-m360hv","title":"Melling Oil Pump - Ford 5.4L Mod Motor Hi-Volume M360HV","description":"Oil Pump - Wet Sump - Internal - High Volume - Ford Modular - Each\u003cp\u003e\u003cbr\u003eMelling Oil Pump - Ford 5.4L Mod Motor Hi-Volume M360HV\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Melling","offers":[{"title":"Default Title","offer_id":41305707675696,"sku":"BCBC_M360HV","price":134.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/MELM360HV.jpg?v=1712936773"},{"product_id":"flowtech-purple-hornie-muffler-3-00in-2-25in-50230flt","title":"FlowTech Flowtech Purple Hornies Glasspack 50230FLT","description":"The classic Purple Hornie tubular design glasspack mufflers give sound and performance gains that are more than impressive - they're wild! The 16-gauge, 3.5\" diameter steel shell encloses an interior spiral louver baffle design that increases exhaust velocity while decreasing backpressure, projecting the sound waves into a temperature fibermat material. Available in an 18\" case length with 2.250\" slip-fit or choose from three different styles of 3\" three-hole direct-header-mount designs.\u003cp\u003e\u003cbr\u003eFlowTech Flowtech Purple Hornies Glasspack 50230FLT\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eSpecifications:\u003cbr\u003e\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003e614\u003c\/td\u003e\n\u003ctd\u003e3.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e615\u003c\/td\u003e\n\u003ctd\u003e18.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e621\u003c\/td\u003e\n\u003ctd\u003eAluminized Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e616\u003c\/td\u003e\n\u003ctd\u003e3.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalifornia Proposition 65\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1882\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003ePurple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1161\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003ePainted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3390\u003c\/td\u003e\n\u003ctd\u003ePerformance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e617\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e618\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e601\u003c\/td\u003e\n\u003ctd\u003e3.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e619\u003c\/td\u003e\n\u003ctd\u003eCenter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet Outside Diameter\u003c\/td\u003e\n\u003ctd\u003e3.12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e620\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e596\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1174\u003c\/td\u003e\n\u003ctd\u003eAbsorption \/ Glasspack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e622\u003c\/td\u003e\n\u003ctd\u003e2.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e304\u003c\/td\u003e\n\u003ctd\u003eCenter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlet Outside Diameter\u003c\/td\u003e\n\u003ctd\u003e3.12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e623\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e598\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8971\u003c\/td\u003e\n\u003ctd\u003e24.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e624\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e33\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound Level\u003c\/td\u003e\n\u003ctd\u003eAggressive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e626\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3145\u003c\/td\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFlowtech Exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCategory\u003c\/td\u003e\n\u003ctd\u003eExhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmission Code\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMuffler Series\u003c\/td\u003e\n\u003ctd\u003ePurple Hornies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eStreet Mufflers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Type\u003c\/td\u003e\n\u003ctd\u003eClassic Muscle Car\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Type\u003c\/td\u003e\n\u003ctd\u003eStreet Rod\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Type\u003c\/td\u003e\n\u003ctd\u003eTruck\/SUV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarning\u003c\/td\u003e\n\u003ctd\u003eCalifornia Proposition 65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9957\u003c\/td\u003e\n\u003ctd\u003eSlip-Fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9958\u003c\/td\u003e\n\u003ctd\u003eSlip-Fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epart type\u003c\/td\u003e\n\u003ctd\u003eExhaust Muffler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSub Category\u003c\/td\u003e\n\u003ctd\u003eMufflers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11739\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11740\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e614\u003c\/td\u003e\n\u003ctd\u003e3.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e615\u003c\/td\u003e\n\u003ctd\u003e18.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e621\u003c\/td\u003e\n\u003ctd\u003eAluminized Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e616\u003c\/td\u003e\n\u003ctd\u003e3.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalifornia Proposition 65\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1882\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003ePurple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1161\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003ePainted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3390\u003c\/td\u003e\n\u003ctd\u003ePerformance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e617\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e618\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e601\u003c\/td\u003e\n\u003ctd\u003e3.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e619\u003c\/td\u003e\n\u003ctd\u003eCenter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet Outside Diameter\u003c\/td\u003e\n\u003ctd\u003e3.12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e620\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e596\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1174\u003c\/td\u003e\n\u003ctd\u003eAbsorption \/ Glasspack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e622\u003c\/td\u003e\n\u003ctd\u003e2.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e304\u003c\/td\u003e\n\u003ctd\u003eCenter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlet Outside Diameter\u003c\/td\u003e\n\u003ctd\u003e3.12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e623\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e598\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8971\u003c\/td\u003e\n\u003ctd\u003e24.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e624\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e33\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound Level\u003c\/td\u003e\n\u003ctd\u003eAggressive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e626\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3145\u003c\/td\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFlowtech Exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCategory\u003c\/td\u003e\n\u003ctd\u003eExhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmission Code\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMuffler Series\u003c\/td\u003e\n\u003ctd\u003ePurple Hornies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eStreet Mufflers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Type\u003c\/td\u003e\n\u003ctd\u003eClassic Muscle Car\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Type\u003c\/td\u003e\n\u003ctd\u003eStreet Rod\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Type\u003c\/td\u003e\n\u003ctd\u003eTruck\/SUV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarning\u003c\/td\u003e\n\u003ctd\u003eCalifornia Proposition 65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9957\u003c\/td\u003e\n\u003ctd\u003eSlip-Fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9958\u003c\/td\u003e\n\u003ctd\u003eSlip-Fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epart type\u003c\/td\u003e\n\u003ctd\u003eExhaust Muffler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSub Category\u003c\/td\u003e\n\u003ctd\u003eMufflers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11739\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11740\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_ABR\u003c\/td\u003e\n\u003ctd\u003eMUFF 3.00IN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_SHO\u003c\/td\u003e\n\u003ctd\u003eMUFF PURPLE HORNIE 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_INV\u003c\/td\u003e\n\u003ctd\u003eMUFF - PURPLE HORNIE 3\"x 3 HOLE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_ASC\u003c\/td\u003e\n\u003ctd\u003eHeader Mount Muffler, Packaged as a Single Muffler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_DES\u003c\/td\u003e\n\u003ctd\u003eFlowtech Purple Hornies Glasspack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_EXT\u003c\/td\u003e\n\u003ctd\u003e3-Hole Header Muffler, 3\" Inlet, 2.250\" Outlet, Muffler Body Length 18\", Overall Length 24\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_MKT\u003c\/td\u003e\n\u003ctd\u003eThe classic Purple Hornie tubular design glasspack mufflers give sound and performance gains that are more than impressive - they're wild! The 16-gauge, 3.5\" diameter steel shell encloses an interior spiral louver baffle design that increases exhaust velocity while decreasing backpressure, projecting the sound waves into a temperature fibermat material. Available in an 18\" case length with 2.250\" slip-fit or choose from three different styles of 3\" three-hole direct-header-mount designs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003eRich\/Powerful Sound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003eDistinctive Purple Finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003eSpiral Louver Design Core\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003eDecreases Backpressure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003eBoosts Horsepower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003e3.5 Diameter 16-Gauge Case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_ABR\u003c\/td\u003e\n\u003ctd\u003eMUFF 3.00IN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_SHO\u003c\/td\u003e\n\u003ctd\u003eMUFF PURPLE HORNIE 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_INV\u003c\/td\u003e\n\u003ctd\u003eMUFF - PURPLE HORNIE 3\"x 3 HOLE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_ASC\u003c\/td\u003e\n\u003ctd\u003eHeader Mount Muffler, Packaged as a Single Muffler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_DES\u003c\/td\u003e\n\u003ctd\u003eFlowtech Purple Hornies Glasspack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_EXT\u003c\/td\u003e\n\u003ctd\u003e3-Hole Header Muffler, 3\" Inlet, 2.250\" Outlet, Muffler Body Length 18\", Overall Length 24\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_MKT\u003c\/td\u003e\n\u003ctd\u003eThe classic Purple Hornie tubular design glasspack mufflers give sound and performance gains that are more than impressive - they're wild! The 16-gauge, 3.5\" diameter steel shell encloses an interior spiral louver baffle design that increases exhaust velocity while decreasing backpressure, projecting the sound waves into a temperature fibermat material. Available in an 18\" case length with 2.250\" slip-fit or choose from three different styles of 3\" three-hole direct-header-mount designs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003eRich\/Powerful Sound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003eDistinctive Purple Finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003eSpiral Louver Design Core\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003eDecreases Backpressure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003eBoosts Horsepower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_FAB\u003c\/td\u003e\n\u003ctd\u003e3.5 Diameter 16-Gauge Case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"FlowTech","offers":[{"title":"Default Title","offer_id":41306183303216,"sku":"CJWH_50230FLT","price":51.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/FLT50230.jpg?v=1712969384"},{"product_id":"allstar-performance-engine-cradle-pontiac-heavy-duty-all10144","title":"Allstar Performance Engine Cradle — Pontiac Heavy Duty 1in Square Tube | ALL10144","description":"\u003cp\u003eThis heavy duty engine cradle is built from 1 in square steel tube with a black powder coat finish. Mounting hardware is included. It supports Pontiac V8 engines during storage, transport, or service work. Sold each.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpec Sheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/allstarperformance.com\/content\/ALL10130.pdf\" target=\"_blank\" rel=\"noopener\"\u003eAllstar Spec Sheet\u003c\/a\u003e\u003c\/p\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003ePontiac V8 engines.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat tube size is used?\u003c\/h5\u003e\u003cp\u003eThe cradle frame uses 1 in square steel tube.\u003c\/p\u003e\u003ch5\u003eIs mounting hardware included?\u003c\/h5\u003e\u003cp\u003eYes, hardware is included with this cradle.\u003c\/p\u003e\u003ch5\u003eWhat finish does the cradle have?\u003c\/h5\u003e\u003cp\u003eThe steel frame has a black powder coat finish.\u003c\/p\u003e\u003ch5\u003eWhat duty rating is this cradle?\u003c\/h5\u003e\u003cp\u003eThis is the Heavy Duty version of the Pontiac engine cradle.\u003c\/p\u003e\u003ch5\u003eDoes this cradle include casters?\u003c\/h5\u003e\u003cp\u003eNo, casters are not included and must be purchased separately.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What tube size is used?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The cradle frame uses 1 in square steel tube.\"}}, {\"@type\": \"Question\", \"name\": \"Is mounting hardware included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, hardware is included with this cradle.\"}}, {\"@type\": \"Question\", \"name\": \"What finish does the cradle have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The steel frame has a black powder coat finish.\"}}, {\"@type\": \"Question\", \"name\": \"What duty rating is this cradle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This is the Heavy Duty version of the Pontiac engine cradle.\"}}, {\"@type\": \"Question\", \"name\": \"Does this cradle include casters?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No, casters are not included and must be purchased separately.\"}}]}\u003c\/script\u003e","brand":"Allstar Performance","offers":[{"title":"Default Title","offer_id":41322587553840,"sku":"DNLF_ALL10144","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/ALL10144.jpg?v=1713036158"},{"product_id":"allstar-performance-heated-tire-siper-all10266","title":"Allstar Performance Heated Tire Siper | ALL10266","description":"\u003cp\u003eThe Allstar Performance Heated Tire Siper is a 13 blade tool that runs on 110V for heated siping of race tire tread. It is finished in black and silver.\u003c\/p\u003e\u003cp\u003eThe heated blades allow for cleaner cuts than a cold siper, and a replacement heating element (ALL99111) is available for this tool.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eHow many blades does this siper have?\u003c\/h5\u003e\u003cp\u003eIt has 13 blades.\u003c\/p\u003e\u003ch5\u003eWhat voltage does this siper run on?\u003c\/h5\u003e\u003cp\u003eIt runs on 110V.\u003c\/p\u003e\u003ch5\u003eWhat color is this siper?\u003c\/h5\u003e\u003cp\u003eIt is black and silver.\u003c\/p\u003e\u003ch5\u003eIs a replacement heating element available?\u003c\/h5\u003e\u003cp\u003eYes, an extra-hot replacement heating element (ALL99111) is available for this tool.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How many blades does this siper have?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It has 13 blades.\"}},{\"@type\":\"Question\",\"name\":\"What voltage does this siper run on?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It runs on 110V.\"}},{\"@type\":\"Question\",\"name\":\"What color is this siper?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It is black and silver.\"}},{\"@type\":\"Question\",\"name\":\"Is a replacement heating element available?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, an extra-hot replacement heating element (ALL99111) is available for this tool.\"}}]}\u003c\/script\u003e","brand":"Allstar Performance","offers":[{"title":"Default Title","offer_id":41322595123248,"sku":"DNLF_ALL10266","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/ALL10266.jpg?v=1713036769"},{"product_id":"speed-engineering-ls-swap-longtube-headers-aje-k-member-mustang-1979-2004","title":"Speed Engineering 1-7\/8\" LS Swap Longtube Headers \u0026 AJE K-Member — 1979–1993 Fox Body \u0026 1994–2004 SN95 Ford Mustang | LS1\/LS2\/LS3\/LS6\/LSA | 25-1028 ETA 10\/30\/26","description":"\u003cp\u003eSwapping a GM LS engine into your Fox Body or SN95 Mustang and want everything you need to do it right? This combo kit pairs Speed Engineering's 1-7\/8\" LS swap longtube headers with a complete AJE K-member package — giving you the headers, K-member, motor mounts, spring perches, and steering shaft all in one purchase. Dyno proven to deliver over 25 rear-wheel horsepower over stock manifolds.\u003c\/p\u003e\u003cp\u003eBuilt from 304 natural stainless steel with merge spikes and standard graphite manifold gaskets included.\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\u003eGM LS engine swaps only\u003c\/strong\u003e — these headers are NOT designed for Ford engines of any kind\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeaders have only been tested successfully with AJE Motor Mounts, Flaming River Steering Shafts, and AJE K-Members\u003c\/strong\u003e — compatibility with other combinations is unknown and not guaranteed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eSpeed Engineering Headers — Kit Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1-7\/8\" Longtube Headers with Merge Spikes\u003c\/li\u003e\n\u003cli\u003eStandard Graphite Manifold Gaskets\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eAJE Suspension — Kit Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1979–2004 AJE K-Member\u003c\/li\u003e\n\u003cli\u003eLS Engine Motor Mounts\u003c\/li\u003e\n\u003cli\u003e1979–2004 Spring Perches — Allows use of factory A-arms and springs\u003c\/li\u003e\n\u003cli\u003e1979–2004 Manual or Power Steering Shaft Kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eHeader Features:\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 with Merge Spikes\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 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\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 LS applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 LS 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\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All applications listed are GM LS engine swap conversions. These headers are not compatible with Ford engines of any kind.\u003c\/p\u003e\u003c\/blockquote\u003e\u003cp\u003e\u003cstrong\u003eFord Mustang — Fox Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1979 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1980 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1981 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1982 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1983 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1984 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1985 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1986 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1987 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1988 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1989 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1990 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1991 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1992 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1993 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFord Mustang — SN95 (RWD)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1994 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1995 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1996 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1997 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1998 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1999 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e2000 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e2001 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e2002 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e2003 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e2004 Ford Mustang (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat is included in this kit?\u003c\/h5\u003e\u003cp\u003eThis kit includes Speed Engineering 1-7\/8\" LS swap longtube headers with merge spikes and graphite manifold gaskets, plus the AJE K-member, LS engine motor mounts, 1979–2004 spring perches, and a manual or power steering shaft kit.\u003c\/p\u003e\u003ch5\u003eWill these headers work with my Ford engine?\u003c\/h5\u003e\u003cp\u003eNo. These headers are designed for GM LS engine swaps only and are not compatible with Ford engines of any kind.\u003c\/p\u003e\u003ch5\u003eWhat motor mounts and K-member are compatible with these headers?\u003c\/h5\u003e\u003cp\u003eThese headers have only been tested successfully with AJE Motor Mounts, Flaming River Steering Shafts, and AJE K-Members — all of which are included in this kit. Compatibility with other combinations is unknown and not guaranteed.\u003c\/p\u003e\u003ch5\u003eWill the AJE spring perches allow me to keep my factory A-arms and springs?\u003c\/h5\u003e\u003cp\u003eYes. The included 1979–2004 spring perches are designed to allow the use of factory A-arms and springs.\u003c\/p\u003e\u003ch5\u003eWhat is the difference between this listing and the headers-only version?\u003c\/h5\u003e\u003cp\u003eThis listing is a complete combo kit that includes the AJE K-member, motor mounts, spring perches, and steering shaft kit in addition to the Speed Engineering headers. The headers-only listing includes just the headers and gaskets.\u003c\/p\u003e\u003ch5\u003eWhat LS engines are these headers compatible with?\u003c\/h5\u003e\u003cp\u003eThese headers are compatible with GM LS V8 engines including 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA.\u003c\/p\u003e\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\u003cp\u003eSpeed Engineering's 1-7\/8\" LS swap longtube headers are dyno proven to add over 25 rear-wheel horsepower compared to stock exhaust manifolds on LS applications.\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\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\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is included in this kit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This kit includes Speed Engineering 1-7\/8\\\" LS swap longtube headers with merge spikes and graphite manifold gaskets, plus the AJE K-member, LS engine motor mounts, 1979–2004 spring perches, and a manual or power steering shaft kit.\"}}, {\"@type\": \"Question\", \"name\": \"Will these headers work with my Ford engine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed for GM LS engine swaps only and are not compatible with Ford engines of any kind.\"}}, {\"@type\": \"Question\", \"name\": \"What motor mounts and K-member are compatible with these headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers have only been tested successfully with AJE Motor Mounts, Flaming River Steering Shafts, and AJE K-Members — all of which are included in this kit. Compatibility with other combinations is unknown and not guaranteed.\"}}, {\"@type\": \"Question\", \"name\": \"Will the AJE spring perches allow me to keep my factory A-arms and springs?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The included 1979–2004 spring perches are designed to allow the use of factory A-arms and springs.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between this listing and the headers-only version?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This listing is a complete combo kit that includes the AJE K-member, motor mounts, spring perches, and steering shaft kit in addition to the Speed Engineering headers. The headers-only listing includes just the headers and gaskets.\"}}, {\"@type\": \"Question\", \"name\": \"What LS 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, 6.2L, LS1, LS2, LS3, LS6, and LSA.\"}}, {\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-7\/8\\\" LS swap longtube headers are dyno proven to add over 25 rear-wheel horsepower compared to stock exhaust manifolds on LS 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 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":41390100185136,"sku":"25-1028","price":999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_LS_Swap_Longtube_Headers_AJE_K-Member_FOX_BODY_1979_1993_sn95_1994_2004_Ford_Mustang_25-1028.png?v=1762274662"},{"product_id":"chevrolet-performance-sbc-engine-oil-dipstick-tube-block-mount-3951600","title":"Chevrolet Performance SBC Engine Oil Dipstick Tube, Block Mount | 3951600","description":"\u003cp\u003eThis steel oil dipstick tube mounts into the block on Small Block Chevy engines. It is supplied as the tube only. Sold each.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComponent: Engine oil dipstick tube\u003c\/li\u003e\n\u003cli\u003eConfiguration: Tube only\u003c\/li\u003e\n\u003cli\u003eMount: Block mount\u003c\/li\u003e\n\u003cli\u003eMaterial: Steel\u003c\/li\u003e\n\u003cli\u003eEngine family: Small Block Chevy\u003c\/li\u003e\n\u003cli\u003eQuantity: Each\u003c\/li\u003e\n\u003cli\u003ePart number: 3951600\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eSmall Block Chevy\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat is part 3951600?\u003c\/h5\u003e\u003cp\u003eIt is a steel engine oil dipstick tube that mounts into the block on Small Block Chevy engines.\u003c\/p\u003e\u003ch5\u003eDoes it include the dipstick?\u003c\/h5\u003e\u003cp\u003eNo. It is supplied as the tube only.\u003c\/p\u003e\u003ch5\u003eWhich engines does it fit?\u003c\/h5\u003e\u003cp\u003eIt is a block-mount Small Block Chevy component.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is part 3951600?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is a steel engine oil dipstick tube that mounts into the block on Small Block Chevy engines.\"}}, {\"@type\": \"Question\", \"name\": \"Does it include the dipstick?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is supplied as the tube only.\"}}, {\"@type\": \"Question\", \"name\": \"Which engines does it fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is a block-mount Small Block Chevy component.\"}}]}\u003c\/script\u003e","brand":"Chevrolet Performance Parts","offers":[{"title":"Default Title","offer_id":41429100986416,"sku":"FMQX_3951600","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/GMP3951600.jpg?v=1715004233"},{"product_id":"speed-engineering-spark-plug-wires-car-truck-suv-10-length-red-26-1001","title":"Speed Engineering Spark Plug Wires Car, Truck, \u0026 SUV 10\" Length \"RED\" 26-1001","description":"\u003cp\u003eSpeed Engineering 45 degree angled spark plug wires. Speed Engineering offers its own line of quality spark plug wires produced in the U.S. These angled plug wires work great with all standard and swap headers and are among the best fitting wires on the market, with more clearance than most competing options.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Throughout the years GM Trucks \u0026amp; SUV's have used different part number coils and locations. Some require a longer 12\" wire, and some use the shorter 10\" wire. Please verify which wire you have prior to ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures include:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\"Made in the USA\"\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e45 Degree Angled Spark Plug Boots\u003c\/li\u003e\n\u003cli\u003eHigh Temp Heat Resistant\u003c\/li\u003e\n\u003cli\u003eLarge 8.2MM 40-OHM Wires\u003c\/li\u003e\n\u003cli\u003e8 Piece Set\u003c\/li\u003e\n\u003cli\u003e4.8L, 5.3L, 5.7L, 6.0L, 6.2L Engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat length are these spark plug wires?\u003c\/h5\u003e\u003cp\u003eThese are 10\" length spark plug wires, in red.\u003c\/p\u003e\u003ch5\u003eHow do I know if I need the 10\" or 12\" wire?\u003c\/h5\u003e\u003cp\u003eThroughout the years GM Trucks \u0026amp; SUVs have used different part number coils and locations — some require a longer 12\" wire, and some use the shorter 10\" wire. Verify which wire you have prior to ordering.\u003c\/p\u003e\u003ch5\u003eWhat engines are these wires for?\u003c\/h5\u003e\u003cp\u003eThey're designed for 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L engines.\u003c\/p\u003e\u003ch5\u003eWhere are these wires made?\u003c\/h5\u003e\u003cp\u003eThey're made in the USA.\u003c\/p\u003e\u003ch5\u003eHow many wires come in a set?\u003c\/h5\u003e\u003cp\u003eThis is an 8 piece set.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What length are these spark plug wires?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These are 10\\\" length spark plug wires, in red.\"}}, {\"@type\": \"Question\", \"name\": \"How do I know if I need the 10\\\" or 12\\\" wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Throughout the years GM Trucks \u0026 SUVs have used different part number coils and locations — some require a longer 12\\\" wire, and some use the shorter 10\\\" wire. Verify which wire you have prior to ordering.\"}}, {\"@type\": \"Question\", \"name\": \"What engines are these wires for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"They're designed for 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L engines.\"}}, {\"@type\": \"Question\", \"name\": \"Where are these wires made?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"They're made in the USA.\"}}, {\"@type\": \"Question\", \"name\": \"How many wires come in a set?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This is an 8 piece set.\"}}]}\u003c\/script\u003e","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":41480594522160,"sku":"26-1001","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/26-1001LSLTSparkPlugWiresCar_Tru.jpg?v=1716901255"},{"product_id":"texas-speed-chopacabra-truck-cam-tsp-chopacabra","title":"Texas Speed TSP \"Chopacabra\" Truck Cam TSP-CHOPacabra","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003e\u003cstrong\u003eTSP \"CHOPacabra\" Truck Cam Specs:\u003c\/strong\u003e 214\/222 .550\/.550 108 LSA 106 ICL\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eIntroducing the CHOPacabra cam! This is a nasty little beast of cam. Designed to work with LS6 valve springs and a factory torque converter. If you're looking for that mean, snarling sound and performance that will leave your opponent second guessing what he just saw...this is it!\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan\u003e\u003cstrong\u003eEngines best suited for:\u003c\/strong\u003e 4.8, 5.3, 5.7, 6.0 (Equipped with cathedral port heads)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan\u003e\u003cstrong\u003eDesired Compression ratio for cam\u003c\/strong\u003e: 9.5:1+\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan\u003e\u003cstrong\u003eRecommended Springs Required\u003c\/strong\u003e: GM LS6 Beehive Valve Springs\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan\u003e\u003cstrong\u003eAftermarket Stall Converter Required\u003c\/strong\u003e: No. Factory converter friendly!\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan\u003e\u003cstrong\u003eUpgraded Rear Gear Required:\u003c\/strong\u003e No\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan\u003e\u003cstrong\u003eOperating RPM Range\u003c\/strong\u003e: 1200-6500\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\n\u003cspan\u003e\u003cstrong\u003ePower Increase\u003c\/strong\u003e: Under testing it gained 67hp and 26ft lbs of torque at the crank\u003c\/span\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan\u003e\u003cstrong\u003eDrivability:\u003c\/strong\u003e Great driveability with an amazing chop!\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003e\u003cstrong\u003eDyno Test Motor Specs:\u003c\/strong\u003e Stock Gen IV 5.3, Stock 862 heads with GM LS6 Valve Springs, TBSS intake manifold.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/vS8zoaQnCHY\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":41480693579824,"sku":"TSP-CHOPacabra","price":409.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Untitleddesign_45.png?v=1732230206"},{"product_id":"raxiom-15-22-ford-mustang-axial-series-led-side-marker-lights-rear-smoked-1","title":"Raxiom 15-22 Ford Mustang Axial Series LED Side Marker Lights Rear (Smoked)","description":"\u003cp\u003eA pair of Axial Smoked LED Side Marker Lights will upgrade the exterior styling of your 2015-2023 S550 Mustang. These Side Marker Lights feature a razor sharp LED strip that replaces the unsightly hot spot of the factory lights. Axial Side Marker Lights not only look great, but they are also much brighter than the weak factory incandescent lights for increased visibility day or night. Raxiom manufactures their Rear Side Marker Lights with injected molded ABS plastic housings for durability, and smoked lenses for intimidating good looks. These Side Marker employee high output, red, LED strip lighting for super bright illumination. Raxiom ensures that their Side Marker Light housings are weather sealed to prevent dirt and moisture from harming the state of the art electronics found inside. Raxiom designed their LED Side Marker Lights to be a direct plug and play upgrade for your Mustang's original factory lights. There is absolutely no cutting, splicing or resistors required. Just pop out the old factory side markers and disconnect the wiring harness. Plug the harness into the back of your new LED Side Markers and snap them in place of the old ones. It's that simple!\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDriver and Passenger Rear Side Markers Included\u003c\/li\u003e\n\u003cli\u003eDurable ABS Plastic Housings\u003c\/li\u003e\n\u003cli\u003eLighting Appearance Upgrade\u003c\/li\u003e\n\u003cli\u003ePlug and Play Installation\u003c\/li\u003e\n\u003cli\u003eSuper Bright LED Strip\u003c\/li\u003e\n\u003cli\u003eSmoked Lenses\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis Part Fits:\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2020\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eBullitt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2023\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eEcoBoost\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2023\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eEcoBoost Premium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2023\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eGT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eGT 50 Years Limited Edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2023\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eGT Premium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2023\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eMach 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2020\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eShelby GT350\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2020\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eShelby GT350R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020-2022\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eShelby GT500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2017\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eV6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Raxiom","offers":[{"title":"Default Title","offer_id":41640988147760,"sku":"RAX404231","price":31.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/922b738ee27ae900dbd1436687da4d5d.jpg?v=1725744242"},{"product_id":"speed-engineering-ls-swap-1-7-8-longtube-headers-1982-1988-g-body-ls1-lsa","title":"Speed Engineering 1-7\/8\" LS Swap Longtube Headers — 1982–1988 GM G-Body | LS1\/LS2\/LS3\/LS6\/LSA | 25-1137","description":"\u003cp\u003eDropping an LS engine into your G-body? Speed Engineering's 1-7\/8\" LS swap longtube headers are engineered specifically for great fitment on the G-body platform — mandrel bent, TIG-welded, and CNC-machined for a precise fit on Monte Carlo, El Camino, Grand Prix, Cutlass, and Regal LS swap builds. Compatible with the full LS engine family from 4.8L through 6.2L including LS1, LS2, LS3, LS6, and LSA. Dyno proven and built from 304 natural stainless steel with merge spikes and standard graphite manifold gaskets included.\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\u003eLS swap applications only\u003c\/strong\u003e — these headers are NOT compatible with standard SBC or BBC engines\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDue to older vehicle frame clearance, headers fit very tight and require Speed Engineering spark plug wires\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L80E or older Turbo 350\/400 transmission\u003c\/strong\u003e — bellhousing ears may need to be trimmed for proper 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\u003e1-7\/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 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\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEngineered for Great Fitment on the G-Body Platform\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard Graphite Manifold Gaskets Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDyno Proven\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eV8 LS 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\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All applications listed are LS swap conversions. These headers are not compatible with the original factory engines in these vehicles.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet Monte Carlo — G-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1982 Chevrolet Monte Carlo (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1983 Chevrolet Monte Carlo (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1984 Chevrolet Monte Carlo (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1985 Chevrolet Monte Carlo (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1986 Chevrolet Monte Carlo (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1987 Chevrolet Monte Carlo (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1988 Chevrolet Monte Carlo (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet El Camino — G-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1982 Chevrolet El Camino (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1983 Chevrolet El Camino (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1984 Chevrolet El Camino (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1985 Chevrolet El Camino (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1986 Chevrolet El Camino (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1987 Chevrolet El Camino (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePontiac Grand Prix — G-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1982 Pontiac Grand Prix (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1983 Pontiac Grand Prix (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1984 Pontiac Grand Prix (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1985 Pontiac Grand Prix (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1986 Pontiac Grand Prix (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1987 Pontiac Grand Prix (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOldsmobile Cutlass — G-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1982 Oldsmobile Cutlass (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1983 Oldsmobile Cutlass (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1984 Oldsmobile Cutlass (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1985 Oldsmobile Cutlass (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1986 Oldsmobile Cutlass (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1987 Oldsmobile Cutlass (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBuick Regal — G-Body (RWD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1982 Buick Regal (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1983 Buick Regal (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1984 Buick Regal (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1985 Buick Regal (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1986 Buick Regal (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1987 Buick Regal (RWD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1988 Buick Regal (RWD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill these headers work with my SBC or BBC engine?\u003c\/h5\u003e\n\u003cp\u003eNo. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between these headers and the LT swap G-body headers?\u003c\/h5\u003e\n\u003cp\u003eThe key difference is the engine family. These headers are designed for GM LS engine swaps including LS1, LS2, LS3, LS6, and LSA. The LT swap G-body headers (25-1165) are designed for Gen V LT direct injection engine swaps including LT1 and LT4. Make sure you select the correct headers for your specific engine swap.\u003c\/p\u003e\n\u003ch5\u003eDo I need special spark plug wires?\u003c\/h5\u003e\n\u003cp\u003eYes. Due to tight frame clearance on older G-body platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.\u003c\/p\u003e\n\u003ch5\u003eWill these fit with a 4L80E or older Turbo 350\/400 transmission?\u003c\/h5\u003e\n\u003cp\u003eThese headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\u003c\/p\u003e\n\u003ch5\u003eWhat LS 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, 6.2L, LS1, LS2, LS3, LS6, and LSA.\u003c\/p\u003e\n\u003ch5\u003eWhat G-body vehicles do these headers fit?\u003c\/h5\u003e\n\u003cp\u003eThese headers fit 1982–1988 Chevrolet Monte Carlo, 1982–1987 Chevrolet El Camino, 1982–1987 Pontiac Grand Prix, 1982–1987 Oldsmobile Cutlass, and 1982–1988 Buick Regal.\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\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will these headers work with my SBC or BBC engine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between these headers and the LT swap G-body headers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The key difference is the engine family. These headers are designed for GM LS engine swaps including LS1, LS2, LS3, LS6, and LSA. The LT swap G-body headers (25-1165) are designed for Gen V LT direct injection engine swaps including LT1 and LT4. Make sure you select the correct headers for your specific engine swap.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need special spark plug wires?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Due to tight frame clearance on older G-body platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit with a 4L80E or older Turbo 350\/400 transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\"}}, {\"@type\": \"Question\", \"name\": \"What LS 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, 6.2L, LS1, LS2, LS3, LS6, and LSA.\"}}, {\"@type\": \"Question\", \"name\": \"What G-body vehicles do these headers fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers fit 1982–1988 Chevrolet Monte Carlo, 1982–1987 Chevrolet El Camino, 1982–1987 Pontiac Grand Prix, 1982–1987 Oldsmobile Cutlass, and 1982–1988 Buick Regal.\"}}, {\"@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":41650417762352,"sku":"25-1137","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_LS_Swap_1-7_8_Longtube_Headers_1982_1988_G_Body_LS1_LS2_LS3_LS6_LSA_25-1137.jpg?v=1762274961"},{"product_id":"speed-engineering-ls-swap-1-7-8-longtube-headers-obs-silverado-sierra-c1500-1988-1998-2wd-ls1-ls2-ls3-ls6-lsa-25-1137","title":"Speed Engineering 1-7\/8\" LS Swap Longtube Headers — 1988–1998 Chevrolet \u0026 GMC C1500 2WD GMT400 OBS Truck | 25-1137","description":"\u003cp\u003eBuilding an LS swap into your 2WD GMT400 OBS C1500? Speed Engineering's 1-7\/8\" LS swap longtube headers are specifically engineered for great fitment on the OBS platform — mandrel bent, TIG-welded, and CNC-machined for a precise fit on the most popular classic GM truck LS conversion. Compatible with the full LS engine family from 4.8L through 6.2L including LS1, LS2, LS3, LS6, and LSA. Dyno proven to deliver over 25 rear-wheel horsepower over stock manifolds.\u003c\/p\u003e\n\u003cp\u003eBuilt from 304 natural stainless steel with merge spikes and standard graphite manifold gaskets included.\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\u003cstrong\u003e2WD applications only — these headers will NOT fit 4WD C1500 trucks\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLS swap applications only\u003c\/strong\u003e — these headers are NOT compatible with standard SBC or BBC engines\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDue to older vehicle frame clearance, headers fit very tight and require Speed Engineering spark plug wires\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4L80E or older Turbo 350\/400 transmission\u003c\/strong\u003e — bellhousing ears may need to be trimmed for proper clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-road X-pipe kit\u003c\/strong\u003e — requires a modified or aftermarket crossmember for proper fitment. Compatible with Suspension Engineering transmission crossmember with required shims (4L60 will need 3 shims)\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\u003e1-7\/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 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\u003eLongtube Header Design\u003c\/strong\u003e — Maximum scavenging efficiency vs. shorty or mid-length headers\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEngineered for Great Fitment on the OBS Platform\u003c\/strong\u003e\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 LS applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6, and LSA Engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLS V8 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\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All applications listed are LS swap conversions. 2WD applications only — will NOT fit 4WD trucks.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003eChevrolet C1500 Truck (2WD) — GMT400 OBS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1988 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1989 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1990 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1991 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1992 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1993 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1994 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1995 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1996 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1997 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1998 Chevrolet C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGMC C1500 Truck (2WD) — GMT400 OBS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1988 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1989 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1990 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1991 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1992 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1993 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1994 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1995 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1996 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1997 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003cli\u003e1998 GMC C1500 Truck (2WD) — LS Swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eWill these headers fit my 4WD C1500?\u003c\/h5\u003e\n\u003cp\u003eNo. These headers are designed for 2WD C1500 applications only and will not fit 4WD trucks. For 4WD K1500 applications see part 25-1011 (1-7\/8\") or 25-1077 (2\").\u003c\/p\u003e\n\u003ch5\u003eWill these headers work with my SBC or BBC engine?\u003c\/h5\u003e\n\u003cp\u003eNo. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\u003c\/p\u003e\n\u003ch5\u003eDo I need special spark plug wires?\u003c\/h5\u003e\n\u003cp\u003eYes. Due to tight frame clearance on older OBS truck platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.\u003c\/p\u003e\n\u003ch5\u003eDoes the off-road X-pipe kit bolt directly to the factory crossmember?\u003c\/h5\u003e\n\u003cp\u003eNo. The off-road X-pipe kit requires a modified or aftermarket crossmember for proper fitment. The Suspension Engineering transmission crossmember is compatible with required shims — a 4L60 transmission will need 3 shims.\u003c\/p\u003e\n\u003ch5\u003eWill these fit with a 4L80E or older Turbo 350\/400 transmission?\u003c\/h5\u003e\n\u003cp\u003eThese headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\u003c\/p\u003e\n\u003ch5\u003eWhat LS 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, 6.2L, LS1, LS2, LS3, LS6, and LSA.\u003c\/p\u003e\n\u003ch5\u003eHow much horsepower do these headers add?\u003c\/h5\u003e\n\u003cp\u003eSpeed Engineering's 1-7\/8\" LS swap longtube headers are dyno proven to add over 25 rear-wheel horsepower compared to stock exhaust manifolds on LS 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\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will these headers fit my 4WD C1500?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed for 2WD C1500 applications only and will not fit 4WD trucks. For 4WD K1500 applications see part 25-1011 (1-7\/8\\\") or 25-1077 (2\\\").\"}}, {\"@type\": \"Question\", \"name\": \"Will these headers work with my SBC or BBC engine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These headers are designed for LS series engine swaps only and are not compatible with standard small block Chevy or big block Chevy engines.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need special spark plug wires?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Due to tight frame clearance on older OBS truck platforms, Speed Engineering spark plug wires are required for proper fitment with these headers.\"}}, {\"@type\": \"Question\", \"name\": \"Does the off-road X-pipe kit bolt directly to the factory crossmember?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The off-road X-pipe kit requires a modified or aftermarket crossmember for proper fitment. The Suspension Engineering transmission crossmember is compatible with required shims — a 4L60 transmission will need 3 shims.\"}}, {\"@type\": \"Question\", \"name\": \"Will these fit with a 4L80E or older Turbo 350\/400 transmission?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These headers may require trimming of the bellhousing ears on 4L80E or older Turbo 350\/400 transmissions for proper clearance.\"}}, {\"@type\": \"Question\", \"name\": \"What LS 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, 6.2L, LS1, LS2, LS3, LS6, and LSA.\"}}, {\"@type\": \"Question\", \"name\": \"How much horsepower do these headers add?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Speed Engineering's 1-7\/8\\\" LS swap longtube headers are dyno proven to add over 25 rear-wheel horsepower compared to stock exhaust manifolds on LS 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":41650424447024,"sku":"25-1137","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/Speed_Engineering_LS_Swap_1-7_8_Longtube_Headers_1982_1988_G_Body_LS1_LS2_LS3_LS6_LSA_25-1137.jpg?v=1762274961"}],"url":"https:\/\/berryperformancesales.com\/collections\/best-selling.oembed?page=4","provider":"Berry Performance Sales","version":"1.0","type":"link"}