Yoshimura RS-4 Full System Exhaust | 234700D320 Grey 8:1 compression ratio allows use

8:1 compression ratio allows use of premium pump gas

Flatlock stitching for extra comfort

Our new R-77 Works Finish slip-on reduces almost 2 pounds while providing the big 701 more usable horsepower and torque especially on the bottom end

TMD's composite plastics include additives to reduce friction drag & UV protection to prevent color fade

Fitment: Husqvarna FE 450 2017 to 2021Husqvarna FE 501(s) 2017 to 2021KTM 450 EXC-F 2017+

Yoshimura RS-4 Full System Exhaust | 234700D320 Grey 8:1 compression ratio allows usePentagonal shaped muffler Maximized internal volume Polyresonant duplex front chamber Stepped, two stage core baffle Spark Arrestor Sound Insert Compatible http: cdn. wpsstatic. com images full 235a 587d52fdd47dd. jpg