This 4" Cat & DPF Race Pipe fully removes the catalytic converter and DPF filter, which significantly enhances exhaust flow for off-road use. Crafted from high-quality stainless steel, this pipe withstands harsh racing conditions, ensuring durability and performance. Since this pipe is optimized for competition, tuning your engine for the increased airflow becomes necessary, further boosting vehicle performance. If you wish to manage sound levels, you can add a 4" muffler.
Available in 409 (Standard) Ferritic stainless steel and in 304 (Series III) Austenitic stainless steel.
*This kit will only fit models equipped with the OEM-style 3-bolt flange coming off of the turbo direct pipe.
*Will not fit Cab & Chassis trucks.
*Off-road use only. Custom tuning is required*
GM Duramax LML 6.6L - 40 Cal 4" Cat & DPF Race Pipe (2015.5-2016)
- 2015.5 & 2016 GMC Sierra 2500 / 3500 HD with a 6.6L Duramax LML diesel engine.
- 2015.5 & 2016 Chevrolet Silverado 2500 / 3500 HD with a 6.6L Duramax LML dieselengine.
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This kit will only fit models equipped with the OEM-style 3-bolt flange coming off of the turbo direct pipe.
-
Will not fit Cab & Chassis trucks.
- 2015.5 & 2016 GMC Sierra 2500 / 3500 HD with a 6.6L Duramax LML diesel engine.
409 FEATURES (STANDARD)
304 FEATURES (SERIES III)
- 4" Ferritic stainless steel piping
- OE style hangers for easy installation
- Maximum exhaust flow & no bungs
- Downpipe-back
- Moderate rust resistance - 5-8 years
- Magnetic
- 4" Austenitic stainless steel piping
- OE style hangers for easy installation
- Maximum exhaust flow & no bungs
- Downpipe-back
- High rust resistance - up to 20 years
- Non-Magnetic