Connecting 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.
⚠️ Important Notes:
- This X-pipe is designed for Speed Engineering longtube headers only — it will NOT work as a factory exhaust manifold replacement
- Caprice PPV applications require modifications at the axle-back connection for proper installation
Features:
- 3" Mandrel Bent Tubing — Consistent diameter throughout for maximum exhaust flow
- True X-Pipe Design — Balances exhaust pulses between banks for improved tone and mid-range power
- Band Clamps Included
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
- Compatible with 6.0L and 6.2L Engines
- Dyno Proven
Vehicle Applications:
Pontiac G8 — 6.0L/6.2L
- 2008 Pontiac G8 GT (RWD) — 6.0L L76
- 2009 Pontiac G8 GT (RWD) — 6.0L L76
- 2009 Pontiac G8 GXP (RWD) — 6.2L LS3
Chevrolet SS Sedan — 6.2L
- 2014 Chevrolet SS Sedan (RWD) — 6.2L LS3
- 2015 Chevrolet SS Sedan (RWD) — 6.2L LS3
- 2016 Chevrolet SS Sedan (RWD) — 6.2L LS3
- 2017 Chevrolet SS Sedan (RWD) — 6.2L LS3
Chevrolet Caprice PPV — 6.0L
- 2011 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2012 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2013 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2014 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2015 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2016 Chevrolet Caprice PPV (RWD) — 6.0L L77
- 2017 Chevrolet Caprice PPV (RWD) — 6.0L L77
Frequently Asked Questions:
Q: Will this X-pipe work with factory exhaust manifolds?
No. This X-pipe is designed for use with Speed Engineering longtube headers only and will not work as a factory exhaust manifold replacement.
Q: Do Caprice PPV applications require any special modifications?
Yes. Caprice PPV applications require modifications at the axle-back connection for proper installation of this X-pipe.
Q: Does this X-pipe pair with the Speed Engineering longtube headers for these platforms?
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.
Q: What size tubing does this X-pipe use?
3" diameter, mandrel bent for consistent flow throughout. Band clamps are included for installation.
Q: What material is this X-pipe made from?
304 natural stainless steel with mandrel-bent tubing and TIG-welded construction.
Q: Is this X-pipe street legal?
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)).
⚠️ 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).