Yoshimura RS-4 Off-Road Full System Exhaust - 264610D320

Stainless Steel Header / Aluminum Muffler / Carbon Fiber End Cap

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. We took everything we 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 tells us that this new RS-4 system gained 3 horsepower over the stock system plus increased torque throughout the entire RPM range.

Features:

• Pentagonal-shaped sleeve
• Front muffler cap functions as a polyresonant chamber which helps reduce noise
• Two-stage stepped baffle
• Repack Kits and optional Inserts are available for all models
• Series: Signature
• Muffler Type: RS-4
• Header/Muffler/End Cap TYPE: SS/AL/CF

Introducing Signature Series by Yoshimura - an offering of exhaust systems that can be installed with confidence. Signature Series lineup is the answer for today's challenging marketplace. The applications for the Signature Series line cover the entire powersports spectrum, including many of off-road applications. Everyone of Yoshimura's Championship Winning Motocross exhaust systems and nearly all of out ATV/Side-by-Side applications are all members of the Signature Series Family. All Signature Series components are tested, documented, and marked as required by federal and state regulations.

Installation Instructions (1.21 MB)