SuperTrapp 144-78228 4in. Stout Slip-On Muffler - Chrome/Black Ceramic

Massive 4in. non-tunable chrome or black ceramic bodies. Streamlined, internal tapered, billet aluminum end caps with recessed fasteners are preinstalled. Inlets flow better into OEM headpipe as well as SuperTrapp True Dual Headpipes. Provide a heavy, broad-spread power curve with horsepower and torque gains over stock mufflers. Minimally (2 dB) or (5 dB) louder than stock. Sold in pairs. Made in the u. s. a.