Description

Boost the performance of your 2007.5–2010 Chevrolet Silverado or GMC Sierra 2500/3500 HD 6.6L Duramax LMM with this 4-inch DPF Delete Downpipe-Back Exhaust System , engineered for maximum flow and power. Constructed from T-409 stainless steel , this heavy-duty race exhaust eliminates the restrictive DPF and catalytic converter , reducing backpressure and improving exhaust flow. The result is lower EGTs, increased horsepower and torque, sharper throttle response, and improved fuel efficiency . Featuring OE-style hangers, pre-bent tubing, clamps, and fasteners , this system ensures a smooth installation with minimal modifications. Optional muffler configurations allow you to choose between a bold exhaust note or a quieter ride. ✅ Fitment: 2007.5–2010 Chevrolet Silverado 2500HD/3500HD 6.6L Duramax LMM 2007.5–2010 GMC Sierra 2500HD/3500HD 6.6L Duramax LMM ❌ Not compatible with Cab & Chassis models 📦 Package Includes: 4″ T-409 Stainless Steel Downpipe-Back Exhaust System Clamps, hangers, and fasteners (reuse of some OEM fasteners may be required) ⚡ Key Benefits: Deletes DPF & CAT for race/off-road applications Maximizes exhaust flow for increased power & torque Reduces EGTs for improved engine reliability Improves throttle response and efficiency Strong T-409 stainless steel construction for long-term durability 🔧 Installation: About 1 hour using standard tools. Trimming may be required for short wheelbase trucks.