4" Stout Slip-On Muffler Made in the U.S.A.
Massive 4" non-tunable ceramic bodies
Streamlined, internal tapered, billet aluminum end caps with recessed fasteners are preinstalled
Newly-designed inlets flow better into OEM headpipe
Provide a heavy, broad spread power curve with horsepower and torque gains over stock mufflers
Minimally (2 dB) louder than stock