The factory exhaust manifolds on your 6th Gen Camaro SS or ZL1 are one of the first restrictions holding back your LT1 or LT4. This complete full kit pairs Speed Engineering's 2" longtube headers with a 3" off-road X-pipe that connects directly to the existing axle-back location — replacing the restrictive factory exhaust manifolds and mid-pipes with a free-flowing stainless system designed for significant horsepower gains, an aggressive exhaust tone, and long-lasting durability. Dyno proven to deliver over 25 rear-wheel horsepower over stock.
Built from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, and full TIG-welded construction.
⚠️ Important Note: Rear downstream O₂ sensors are not used. A check engine light for catalyst efficiency will appear and must be disabled via PCM tuning.
Kit Includes:
- 1 Pair of 2" Stainless Longtube Headers
- 1 Three-inch Off-Road X-Pipe / Connection Pipe
- 1 Set of Zinc-Coated Header Bolts (upgrade to stainless ARP bolts available at checkout)
- 2 MLS Exhaust Gaskets
- 2 O₂ Extension Harnesses
Optional: Speed Engineering LT Spark Plug Wires and Plug Wire Fire Sleeves can be added at the time of purchase.
Features:
- Full 2" Port-Matched Primary Tubes — Maximum flow from cylinder head to collector for aggressive LT1/LT4 performance
- 3" Collector — Optimized for strong low-to-mid RPM torque
- Mandrel Bent Tubing — Consistent tube diameter through every bend; no crimping, no restriction
- CNC Machined Flanges — Precision fit at the head and collector for a leak-free seal
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
- Longtube Header Design — Maximum scavenging efficiency vs. shorty or mid-length headers
- Standard Graphite Manifold Gaskets Included
- Dyno Proven — 25+ RWHP gain on 6th Gen Camaro applications
- Compatible with 6.2L LT1 and LT4 Engines
Vehicle Applications:
Chevrolet Camaro SS — LT1 6.2L
- 2016 Chevrolet Camaro SS — 6.2L LT1
- 2017 Chevrolet Camaro SS — 6.2L LT1
- 2018 Chevrolet Camaro SS — 6.2L LT1
- 2019 Chevrolet Camaro SS — 6.2L LT1
- 2020 Chevrolet Camaro SS — 6.2L LT1
- 2021 Chevrolet Camaro SS — 6.2L LT1
- 2022 Chevrolet Camaro SS — 6.2L LT1
- 2023 Chevrolet Camaro SS — 6.2L LT1
- 2024 Chevrolet Camaro SS — 6.2L LT1
Chevrolet Camaro ZL1 — LT4 6.2L Supercharged
- 2017 Chevrolet Camaro ZL1 — 6.2L LT4
- 2018 Chevrolet Camaro ZL1 — 6.2L LT4
- 2019 Chevrolet Camaro ZL1 — 6.2L LT4
- 2020 Chevrolet Camaro ZL1 — 6.2L LT4
- 2021 Chevrolet Camaro ZL1 — 6.2L LT4
- 2022 Chevrolet Camaro ZL1 — 6.2L LT4
- 2023 Chevrolet Camaro ZL1 — 6.2L LT4
- 2024 Chevrolet Camaro ZL1 — 6.2L LT4
Frequently Asked Questions:
Q: What is the difference between this kit and the 1-7/8" Camaro full kit (25-1046)? The primary tube diameter is the key difference. The 2" headers deliver maximum exhaust flow for more aggressive builds with supporting modifications such as a cam, heads, or forced induction. The 1-7/8" headers are a strong choice for most street and performance builds across a broader RPM range.
Q: Will I get a check engine light after installing this kit? Yes. The rear downstream O₂ sensors are not used with this system, which will trigger a catalyst efficiency code. This must be resolved through PCM tuning and cannot be cleared by simply resetting the ECU.
Q: What is included in this kit? The kit includes a pair of 2" stainless longtube headers, a 3" off-road X-pipe, two MLS exhaust gaskets, two O₂ extension harnesses, and zinc-coated header bolts. An upgrade to stainless ARP bolts is available at checkout. Speed Engineering LT spark plug wires and plug wire fire sleeves can also be added at the time of purchase.
Q: What engines are these headers compatible with? 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.
Q: How much horsepower does this kit add? Speed Engineering's 2" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 6th Gen Camaro SS and ZL1 applications compared to stock exhaust manifolds.
Q: What material are these headers made from? 304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.
Q: Are these headers street legal? 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)).
⚠️ Race Use Only: 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).
