The Large Bore-HD 5in 409 stainless steel race pipe without muffler eliminates the use of the restrictive diesel particulate filter (DPF) for maximum performance and extreme mileage gains. This free flowing side exit exhaust system outflows the factory exhaust by 300cfm is constructed out of durable 5" mandrel bent 409 stainless steel and uses bayonet style hangers and band clamps for a hassle-free installation. This system is designed with no muffler and comes complete with all tubing, bayonet hangers and band clamps.
Installation is a Snap:
This Large Bore-HD exhaust systems utilizes factory mounting locations providing stability and includes all necessary hardware for hassle-free installation.
High quality OE style band clamps are used for a complete 36 sealing surface.
A muffler delete-pipe is used for a true race-inspired sound and maximum flow.
OE style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The Bayonet tip holds the hanger bushing in place for an OE style fit that does not change with time.
Flow and Performance:
Large Bore-HD exhaust systems are constructed of mandrel bent 5" stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT's.
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. This system also requires an aftermarket electronic module to work properly with the vehicle. Visit https://afepower.com/DPF/release.pdf for the release of liability form.
*This kit will only fit 2015 models manufactured before July 2014 equipped with a non-flanged down pipe.
This is a Race Only product that is to be used solely for competition, it cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-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. To complete the purchase of this item, aFe Power competition acknowledgement/liability release form must be filled out and submitted.
All aFe exhaust systems are engineered and manufactured in our Corona, California manufacturing facility.
- ApplicationsVehicle Applications
Year Make Model SubModel Engine Fuel 2011-2016 Chevrolet Silverado 2500 HD (LML) Duramax Turbo Diesel V8 6.6L Diesel 2011-2016 GMC Sierra 2500 HD (LML) Duramax Turbo Diesel V8 6.6L Diesel 2011-2016 Chevrolet Silverado 3500 HD (LML) Duramax Turbo Diesel V8 6.6L Diesel 2011-2016 GMC Sierra 3500 HD (LML) Duramax Turbo Diesel V8 6.6L Diesel
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