Looking to complete your true dual exhaust build on your GMT900 or K2XX Silverado or Sierra Crew Cab or Extra Cab with an axle-exit system that connects to factory hanger locations? Speed Engineering's true dual exhaust system is built from 3" mandrel bent 304 natural stainless steel with insulated bullet style blow-through mufflers, a true dual X-pipe crossover, and 3" stainless band clamps included. Designed for 2007–2018 Crew Cab 5'8" Short Bed and Extra Cab 6' Short Bed trucks (143.5" wheelbase) and connects directly to factory hanger locations, exiting at the rear axle for a clean, tucked profile. An optional wideband O₂ bung is available for tuning applications. Compatible with 4, 6, and 8 speed automatic transmissions.
⚠️ Important: This system is designed to work with Speed Engineering 2007–2018 truck and SUV longtube headers only. It is NOT designed to work with any factory exhaust equipment.
Features:
- Mandrel Bent 3" Tubing — Consistent diameter throughout for maximum exhaust flow
- True Dual X-Pipe System — Balances exhaust pulses between banks for improved tone and mid-range power
- Insulated Bullet Style Blow-Through Mufflers — Deep, aggressive exhaust tone with straight-through flow
- Axle Exit Design — Clean, tucked exit at the rear axle
- Connects to Factory Hanger Locations — No custom hanger fabrication required on Crew Cab/Extra Cab Short Bed trucks
- Optional Wideband O₂ Bung — Available for wideband sensor placement for tuning applications
- 3" Stainless Band Clamps Included
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
- Compatible with 4, 6, and 8 Speed Automatic Transmissions
- Compatible with 4.8L, 5.3L, 6.0L, and 6.2L V8 Engines
- V8 Engines Only
- Dyno Proven
Vehicle Applications:
Primary fit: Crew Cab 5'8" Short Bed & Extra Cab 6' Short Bed (143.5" wheelbase) — 2007–2018. Will fit longer bed options by extending connection pipes.
Chevrolet Silverado 1500 (2WD/4WD) — Crew Cab Short Bed / Extra Cab Short Bed
- 2007 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed ⚠️ New body style only — NOT Classic
- 2008 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2009 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2010 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2011 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2012 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2013 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2014 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2015 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2016 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2017 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2018 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
GMC Sierra 1500 (2WD/4WD) — Crew Cab Short Bed / Extra Cab Short Bed
- 2007 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed ⚠️ New body style only — NOT Classic
- 2008 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2009 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2010 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2011 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2012 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2013 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2014 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2015 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2016 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2017 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
- 2018 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L — Crew Cab 5'8" Short Bed / Extra Cab 6' Short Bed
Wheelbase Compatibility:
Note: This system has also been used on SUV and other GM truck wheelbase applications. These require lengthening, shortening, and hanger relocation modifications by the installer.
GM Truck (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 119" — Reg Cab, Short Bed (order and modify Reg Cab kit)
- 133" — Reg Cab, Long Bed (order Ext/Crew Cab kit and modify)
- 143.5" — Crew Cab 5'8" Short Bed & Extra Cab 6' Short Bed (primary fit, no modification)
- 153" — Crew Cab, Reg Bed (order and modify part 25-1003)
- 157.5" — Ext Cab, Long Bed (order and modify part 25-1003)
- 167" — Crew Cab, Long Bed (order and modify part 25-1005)
GM SUV (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 116" — Order and modify Reg Cab kit
- 130" (XL) — Order and modify this kit
2002–2013 Chevrolet Avalanche (EXT)
- 130" — Order and modify this kit
FAQ
Will this system work with my factory exhaust manifolds?
No. This system is designed to work with Speed Engineering 2007–2018 truck and SUV longtube headers only. It is not designed to work with any factory exhaust equipment.
What is the difference between this system and the 2007–2018 Crew/Extra Cab rear-exit system (25-1006)?
Both share the same cab configuration (Crew Cab 5'8" Short Bed and Extra Cab 6' Short Bed, 143.5" wheelbase). This system exits at the rear axle for a cleaner, more tucked profile and uses insulated bullet style mufflers. The rear-exit version exits further back and uses full size insulated blow-through mufflers.
What is the difference between this system and the 1999–2006 Crew/Extra Cab axle-exit system (25-1006)?
Both share the same cab configuration and axle-exit design with insulated bullet style mufflers. This version is built for 2007–2018 GMT900/K2XX longtube headers, while the earlier version is built for 1999–2006 GMT800 longtube headers. Select the version matching your truck's generation.
Will this fit the 2007 Classic Silverado or Sierra?
No. This system is for the 2007 new body style (GMT900) only. 2007 Classic owners should use the 1999–2006 Crew/Extra Cab axle-exit system instead.
Will this fit my Reg Cab Short Bed truck?
Not without modification. Reg Cab Short Bed (119" wheelbase) trucks require ordering and modifying the Reg Cab kit.
Will this fit my Tahoe, Yukon, or Suburban?
This system has been used on SUV applications but requires lengthening, shortening, and hanger relocation modifications by the installer.
What transmissions does this system work with?
This system is compatible with 4, 6, and 8 speed automatic transmissions.
Is a wideband O₂ bung included?
An optional wideband O₂ bung is available for wideband sensor placement for tuning applications.
What mufflers does this system use?
Insulated bullet style blow-through mufflers for a deep, aggressive exhaust tone with straight-through flow design.
What material is this system made from?
304 natural stainless steel with mandrel-bent tubing and TIG-welded construction. 3" stainless band clamps are included.
Is this system 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).
