2017-2026 Duramax 4" SS CAT & DPF Race Pipe - w/ Muffler (DDC-3GM17M)

Note: Fits Crew Cab Short Box trucks directly; other configurations may require modification. Only fits models equipped with the OEM-style 4-bolt turbo direct pipe flange. Custom aftermarket tuning is required. Designed for competition/race use only.

The DDC-3GM17M is a 4" CAT and DPF Race Pipe kit designed for 2017-2026 L5P Duramax 6.6L trucks. This system replaces restrictive factory components with high-flow 4" piping to boost torque, improve fuel efficiency, and unleash a deeper, more aggressive exhaust tone. Built for long-term reliability and a precise fit, this kit allows your L5P to breathe properly and perform at its peak.

Why Shop Dirty Exhausts?
When you buy from Dirty Diesel, you’re buying peace of mind. We’ve put in the work to bring you exhaust systems that meet our strict standards for durability and flow. Every kit is vetted for a precision, bolt-on fit, ensuring you get a high-performance system that sounds as good as it performs, without the headache of poor fitment or subpar materials.

Part Number: DDC-3GM17M