DIESELR Cat & DPF Race Pipe (2011-2015 GM 2500/3500 6.6L Duramax)
DIESELR Cat & DPF Race Pipe (2011-2015 GM 2500/3500 6.6L Duramax)
SKU: SKU:255-02400
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The DIESELR Race Pipe Duramax LML V-band is built to handle extreme duty for 2011–2015 GM 2500/3500 HD trucks equipped with the 6.6L Duramax engine. This off-road exhaust system replaces the factory cat and DPF section with a high-flow, mandrel-bent T409 stainless steel pipe that boosts airflow and reduces EGTs.
This model is specifically engineered for trucks with a V-band clamp at the turbo direct pipe. If your truck is equipped with a 3-bolt flange, this kit will not fit—please verify fitment before ordering.
Key Features
- Built with 16-gauge T409 stainless steel for long-term durability
- Mandrel-bent tubing for maximum flow and performance gains
- Leak-free flanges and TorcTite® clamps for a secure connection
- Includes contour bent hangers to ensure factory-style fit
- Designed to lower EGTs and improve throttle response
- Signature DIESELR sound – deep, aggressive tone
Fitment Details
- Fits: 2011–2015 Chevrolet Silverado & GMC Sierra 2500/3500 HD (6.6L Duramax LML)
- Compatible with EC-CC/SB-LB-Dually setups
- ✅ Fits models with V-band turbo downpipe
- ❌ Not compatible with 3-bolt flange turbo connections
Emissions Disclaimer
This race pipe Duramax LML V-band kit is intended for off-road and competition use only. It requires aftermarket tuning to prevent codes and ensure proper engine operation. Installation on street-legal vehicles may violate local, state, or federal regulations. Check your jurisdiction before installation.

