AFE Power Large Bore-HD 4" Stainless Steel Race Pipe With Muffler

2011 - 2015 6.6L GM Duramax LML

SKU NWD-49-44025


The aFe Large Bore-HD DPF-Delete race pipe with muffler eliminates the use of the restrictive diesel particulate filter (DPF) for maximum performance and extreme mileage gains.

This free flowing exhaust system outflows the factory exhaust by 300cfm is constructed out of durable 4" mandrel bent 409 stainless steel and uses bayonet style hangers and band clamps for a clean installation.

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This system comes complete with all tubing, muffler, bayonet hangers, band clamps and is finished off with a high luster 6" polished 304 stainless steel, rolled, slash cut tip. You will be shocked at the performance and mileage improvement you will see from this system.

This system requires the use of a controller with a DPF-delete function.

Note: This is a "Race Only" product used solely for competition. Its use is limited to closed-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws.

Note: This system also requires an aftermarket electronic module to work properly with the vehicle.

This system weighs 85 lbs less than the factory exhaust for increased performance and fuel economy.

All aFe exhaust systems are engineered and manufactured in their Corona, California manufacturing facility.


2011 - 2016

GM Duramax

6.6L LML