The Banks Monster Exhaust is engineered using computational fluid dynamics (CFD) software then tested on both dyno and on-road.Reducing backpressure allows the engine to expel spent gasses with less effort. Less pumping loss means more horsepower, lower EGTs, and improved fuel economy.The Monster Exhaust system cools while flowing up to 80% better than stock! Cooling without killing flow is a major challenge. But the Monster Exhaust wins on both counts thanks to its mandrel-bent constant-diameter tubing and huge Ob-Round patented SideKick tip. The tip is the key. Its unique shape mixes hot exhaust gas with cool ambient air. And, it keeps your trailer safe by directing exhaust gasses to the side.Mandrel bent Stainless Steel constructionVirtually eliminates backpressureLowers exhaust gas tempsDramatically improves flowMaximum Airflow4-inch constant-diameter DPF-back systemDesign cools tailpipe temps as much or more than stockCuts backpressure by nearly 57%Huge polished CHROME tipEmissions Compliant: E.O. Not RequiredUS Patent #5,581,111 S1

This Part Fits:

Year	Make	Model	Submodel
2011-2014	Chevrolet	Silverado 2500 HD	LT
2011-2014	Chevrolet	Silverado 2500 HD	LTZ
2011-2014	Chevrolet	Silverado 2500 HD	WT
2011-2014	Chevrolet	Silverado 3500 HD	LT
2011-2014	Chevrolet	Silverado 3500 HD	LTZ
2011-2014	Chevrolet	Silverado 3500 HD	WT
2011-2014	GMC	Sierra 2500 HD	Denali
2011-2014	GMC	Sierra 2500 HD	SLE
2011-2014	GMC	Sierra 2500 HD	SLT
2011-2014	GMC	Sierra 2500 HD	WT
2011-2014	GMC	Sierra 3500 HD	Denali
2011-2014	GMC	Sierra 3500 HD	SLE
2011-2014	GMC	Sierra 3500 HD	SLT
2011-2014	GMC	Sierra 3500 HD	WT