The factory exhaust manifolds on your C6 Corvette are leaving power on the table. This complete full kit pairs Speed Engineering's 2" longtube headers with a 3" off-road X-pipe that connects directly to the factory cat-back location — replacing the restrictive factory exhaust manifolds and catalytic mid-pipes with a free-flowing stainless system designed for strong horsepower and torque gains, improved throttle response, and a deeper, more aggressive exhaust tone. Dyno proven to deliver over 25 rear-wheel horsepower over stock. Engineered with improved ground clearance over competitors — a strong choice for lowered C6 builds.
Built from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, merge spikes, and full TIG-welded construction. An optional True Dual Exhaust system is available as an upgrade at checkout.
⚠️ Important Installation Notes:
- Rear downstream O₂ sensors are not used — a check engine light for catalyst efficiency will appear and must be disabled via PCM tuning
- Base/GS models use the 3" X-pipe with 2.75" reducers to factory exhaust
- Z06 models use the 3" X-pipe with 3" connection
- 4L60E transmission — 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
- Rear exiting exhaust kit will NOT work with vehicles equipped with a differential cooler
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
Optional True Dual Exhaust System (select at checkout)
Optional: Speed Engineering LS Spark Plug Wires and Plug Wire Fire Sleeves can be added at the time of purchase.
Features:
- Full 2" Port-Matched Primary Tubes with Merge Spike — Maximum flow from cylinder head to collector for aggressive LS 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
- Improved Ground Clearance Over Competitors — Engineered with extra clearance, ideal for lowered C6 builds
- Longtube Header Design — Maximum scavenging efficiency vs. shorty or mid-length headers
- 3" X-Pipe with 2.75" Reducers to Factory Exhaust — For Base and GS applications
- 3" X-Pipe with 3" Connection — For Z06 applications
- Standard Graphite Manifold Gaskets Included
- Dyno Proven — 25+ RWHP gain on C6 Corvette applications
- Compatible with 6.0L LS2/LS6 and 6.2L LS3/LS9 and 7.0L LS7 Engines
- V8 Engines Only
Vehicle Applications:
Chevrolet C6 Corvette Base & Grand Sport (RWD)
- 2005 Chevrolet Corvette C6 (RWD) — 6.0L LS2
- 2006 Chevrolet Corvette C6 (RWD) — 6.0L LS2
- 2007 Chevrolet Corvette C6 (RWD) — 6.0L LS2
- 2008 Chevrolet Corvette C6 (RWD) — 6.2L LS3
- 2009 Chevrolet Corvette C6 (RWD) — 6.2L LS3
- 2010 Chevrolet Corvette C6 (RWD) — 6.2L LS3
- 2011 Chevrolet Corvette C6 (RWD) — 6.2L LS3
- 2012 Chevrolet Corvette C6 (RWD) — 6.2L LS3
- 2013 Chevrolet Corvette C6 (RWD) — 6.2L LS3
Chevrolet C6 Corvette Z06 (RWD)
- 2006 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7
- 2007 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7
- 2008 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7
- 2009 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7
- 2010 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7
- 2011 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7
- 2012 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7
- 2013 Chevrolet Corvette C6 Z06 (RWD) — 7.0L LS7
Chevrolet C6 Corvette ZR1 (RWD)
- 2009 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9
- 2010 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9
- 2011 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9
- 2012 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9
- 2013 Chevrolet Corvette C6 ZR1 (RWD) — 6.2L LS9
Frequently Asked Questions:
Q: How much horsepower does this kit add to a C6 Corvette? Speed Engineering's 2" longtube headers are dyno proven to add over 25 rear-wheel horsepower on C6 Corvette applications compared to stock exhaust manifolds.
Q: What is the difference between the kit with and without true dual exhaust? The standard kit includes the 2" longtube headers, 3" off-road X-pipe, header bolts, and MLS gaskets. The True Dual Exhaust upgrade adds a complete cat-back exhaust system for a full front-to-back stainless exhaust solution. Select your preferred option at checkout.
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: Will these work with my 4L60E transmission? 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.
Q: Will the rear exiting exhaust kit work on my C6? The rear exiting exhaust kit will NOT work with vehicles equipped with a differential cooler.
Q: Are these headers good for lowered C6 Corvettes? Yes. Speed Engineering specifically engineered these headers with improved ground clearance compared to competitors, making them a strong choice for lowered C6 builds.
Q: What engines are these headers compatible with? 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.
Q: What material are these headers made from? 304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and merge spikes.
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).
