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
FAQ
Do these headers fit both AWD and RWD Trailblazer SS models?
Yes. These headers fit both AWD and RWD Trailblazer SS configurations.
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.
What material are these headers made from?
304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and a merge spike.
Are gaskets included?
Yes. Standard graphite manifold gaskets are included.
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).