Yoshimura Signature RS-4 Full System - KTM 450 SX-F '16

Yoshimura took the time to develop and test in order to deliver the best exhaust system available for the new KTM 450, and the results were worth the wait. They took everything they have learned over the last several years with our world famous RS-4 muffler and revised it with the latest materials and an updated spec that makes this new model perform.

The performance gains that were realized on this system are nothing short of amazing. The dyno shows that this new RS-4 system gained 3 horsepower over the stock system plus increased torque throughout the entire RPM range.

• Pentagonal-shaped sleeve
• Front muffler cap functions as a polyresonant chamber which helps reduce noise
• Two-stage stepped baffle
• Carbon fiber end-cap
• Titanium header and tail-pipe

*Please note that there is not a carbon fiber option available for this system.