GM Duramax 6.6L Downpipe-Back Race Exhaust (2011-2015)

This exhaust system is designed to remove the catalytic converter and DPF filter, reducing exhaust restriction and improving exhaust flow. With fewer restrictions, exhaust gases exit more easily, which can help lower exhaust temperatures and support better engine response.

The system is available in 4-inch or 5-inch stainless steel piping, providing increased flow compared to factory exhaust components. The straight-through design is intended for off-road and racing use, where maximum exhaust flow is needed.

Built for durability and proper fitment, this exhaust system supports consistent performance under heavy use. Always check and follow local laws before installing off-road exhaust components.

Vehicle Compatibility

• Years: 2011-2015
• Makes: Chevrolet Silverado, GMC Sierra
• Models: 2500, 3500HD
• Engine: 6.6L Duramax LML (diesel)
• Body: Pickup only

Key Advantages

Discover the benefits of our race exhaust system, specially designed for Duramax enthusiasts seeking performance enhancements:

• Robust stainless steel piping ensures durability in challenging environments
• Available in 4" or 5" sizes to cater to diverse performance needs
• Easy installation with OE-style hangers for a secure fit
• Optimized straight-through design enhances exhaust flow efficiency
• No bungs, making it an ideal choice for off-road escapades and competitive driving

Installation Guidelines

• Requires race tuning for proper operation and best performance
• Includes all required hardware and clamps for installation
• Can be installed at home with proper tools, but professional installation is recommended
• Minor adjustments may be needed depending on the truck’s setup and configuration