All systems use factory mounting locations providing stability and hassle-free installation.
High quality band clamps are included for a complete 360 degree sealing surface.
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:
This ATLAS exhaust system is constructed of 4" mandrel-bent aluminized steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT's.
High Flow Aluminized Muffler:
This aluminized steel performance muffler is designed to provide a deep, throaty, powerful sound on acceleration, but maintain a smooth sound at idle. This muffler is constructed of aluminized steel and uses a straight through perforated core with heat resistant packing to reduce backpressure and maximize exhaust flow. You will see increased performance and improved throttle response over the factory exhaust. Also featuring a stamped aFe POWER logo for an aggressive style. Muffler Specifications: 5" Center Inlet /Outlet, 7" Round x 24" L Body Diameter.
17-19 Chevrolet Silverado HD 2500/3500 V8-6.6L (td) Duramax
17-19 GMC Sierra HD 2500/3500 V8-6.6L (td) Duramax
Extended Cab/Short Bed, 6.6 ft. Bed, 143.5" Wheelbase
Crew Cab/Short Bed, 6.6 ft. Bed, 153.7" Wheelbase
Extended Cab/Long Bed, 8 ft. Bed, 158.1" Wheelbase
Crew Cab/Long Bed, 8 ft. Bed, 167.7" Wheelbase
Cutting is required for some cab configurations.
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.
Year Make Model SubModel Engine Fuel 2017-2019 Chevrolet Silverado 2500 HD (L5P) Duramax Turbo Diesel V8 6.6L Diesel 2017-2019 GMC Sierra 2500 HD (L5P) Duramax Turbo Diesel V8 6.6L Diesel 2017-2019 Chevrolet Silverado 3500 HD (L5P) Duramax Turbo Diesel V8 6.6L Diesel 2017-2019 GMC Sierra 3500 HD (L5P) Duramax Turbo Diesel V8 6.6L Diesel
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