The 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.
Features:
- Full 1-7/8" Primary Tubes — Maximum flow from cylinder head to collector for aggressive LS2 performance
- 3" Collector — Optimized for strong low-to-mid RPM torque
- Merge Spike — Improved exhaust scavenging
- Mandrel Bent Tubing — Consistent tube diameter through every bend; no crimping, no restriction
- CNC Machined Flanges — Precision fit at the cylinder head 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 LS2 applications
- Compatible with 6.0L LS2 Engines
- Fits Both AWD and RWD Configurations
Vehicle Applications:
Chevrolet Trailblazer SS — LS2 6.0L
- 2006 Chevrolet Trailblazer SS (AWD/RWD) — 6.0L LS2
- 2007 Chevrolet Trailblazer SS (AWD/RWD) — 6.0L LS2
- 2008 Chevrolet Trailblazer SS (AWD/RWD) — 6.0L LS2
- 2009 Chevrolet Trailblazer SS (AWD/RWD) — 6.0L LS2
Frequently Asked Questions:
Q: Do these headers fit both AWD and RWD Trailblazer SS models?
Yes. These headers fit both AWD and RWD Trailblazer SS configurations.
Q: How much horsepower do these headers add?
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.
Q: What material are these headers made from?
304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and a merge spike.
Q: Are gaskets included?
Yes. Standard graphite manifold gaskets are included.
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).