KERKER Stout Mufflers - Chrome 140-78228

Stout Mufflers - Chrome Massive 4" non-tunable bodies, Streamlined, internal tapered, billet aluminum end caps with recessed fasteners are preinstalled, Inlets shaped for better flow into OEM headpipe as well as SuperTrapp True Dual Headpipes, Provide a bold, strong power curve from mid-range on up with a significant horsepower and torque gain over stock mufflers, Classic deep and heavy Kerker rumble is 5 dB over stock, Made in the U.S.A.