Monster Exhaust System, 4-inch Single Exit, Black SideKick Tip for 2011-2014 Chevy/GMC 2500/3500 6.6L Duramax, LML, ECLB-CCLB Engine Timing Tab Prop 65: YES

Prop 65: YES

Muffler Before Axle

And finally

mud caked rockers

Resonator-Back

Monster Exhaust System, 4-inch Single Exit, Black SideKick Tip for 2011-2014 Chevy/GMC 2500/3500 6.6L Duramax, LML, ECLB-CCLB Engine Timing Tab Prop 65: YESThe 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