The Yoshimura RS-4 exhaust system was designed with one thing in mind,
winning races. The RS-4 is a unique design with predicated power, and a
quiet earthy exhaust note that speaks volumes for performance.
Titainum Full Systems include an RS-4 muffler, titanium header and tail-pipe, AMA Pro Racing insert, all necessary hardware, and detailed installation instructions to get you moving.*This exhaust system is for Off-Road Use ONLY. Muffler interferes
with turn signal and license plate mounts on dual-sport models.
Low-Volume Insert and Spark Arrestor Chart