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Yoshimura Exhaust


Yoshimura Exhaust RS4 YZ 450F

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Yoshimura Exhaust RS4 YZ 450F

If you're looking for serious performance then you came to the right place, introducing the Championship winning RS-4 Slip-On exhaust. . A unique design that provides an unrivaled combination of power and a quiet exhaust note. The RS-4 features a Polyresonant duplex chamber, a two-staged stepped baffle and an innovative carbon cone end cap.


  • Pentagonal-shaped sleeve
  • Polyresonant front muffler chamber which helps reduce noise
  • Two-stage stepped baffle
  • Carbon fiber end-cap
  • CARB/EPA tailpipe emissions compliant
  • 100% Made in the USA
    Make Model Years
    Yamaha YZ 450F