Interested in a new exhaust system for your LML Duramax? Check out the ATLAS Dual DPF-Back exhaust system by aFe. This system is constructed from 4 in. mandrel-bent aluminized steel tubing and uses high quality band clamps and OE-style bayonet hangers. This unit uses all factory mounting locations and comes with a bolt-on bracket that supports the driverside tailpipe. This provides for quick, hassle-free installation with no modification necessary. Also included in this exhaust system are dual massive 6 in. high temp black powder-coated stainless steel tips with laser-cut stainless steel aFe power badges. The tips feature a drain port on the bottom to keep rust and corrosion away. ATLAS exhaust systems are the perfect combination of performance, fit and value. The exhaust is designed to convert the standard exhaust into and aggressive dual exhaust. Fits perfectly without relocating the spare tire. Allows for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGTs. All aFe exhaust systems are engineered and manufactured in our Corona, California manufacturing facility.

Vehicle Fitment

Years	Make	Model	Trim
2015–2016	Chevrolet	Silverado 2500 HD	High Country
2011–2016	Chevrolet	Silverado 2500 HD	LT
2011–2016	Chevrolet	Silverado 2500 HD	LTZ
2011–2016	Chevrolet	Silverado 2500 HD	WT
2015–2016	Chevrolet	Silverado 3500 HD	High Country
2011–2016	Chevrolet	Silverado 3500 HD	LT
2011–2016	Chevrolet	Silverado 3500 HD	LTZ
2011–2016	Chevrolet	Silverado 3500 HD	WT
2015–2016	GMC	Sierra 2500 HD	Base
2011–2016	GMC	Sierra 2500 HD	Denali
2011–2016	GMC	Sierra 2500 HD	SLE
2011–2016	GMC	Sierra 2500 HD	SLT
2011–2014	GMC	Sierra 2500 HD	WT
2015–2016	GMC	Sierra 3500 HD	Base
2011–2016	GMC	Sierra 3500 HD	Denali
2011–2016	GMC	Sierra 3500 HD	SLE
2011–2016	GMC	Sierra 3500 HD	SLT
2011–2014	GMC	Sierra 3500 HD	WT