It's been a long time coming, and it's finally here, the new redesigned Suzuki RM-Z450. Nobody, but nobody, knows Suzuki like Yoshimura. We have been making power for the RM-Z450 from the beginning and now it's refined.

Our new RS-4 Signature Series systems max horsepower is up 3.5 %, max torque is up 1.5%. Winning on the new RM-Z450 will be even easier now with Yoshimura power!

Proudly made in the USA!

• Pentagonal-shaped sleeve
• Front muffler cap functions as a polyresonant chamber which helps reduce noise
• Two-stage stepped baffle
• Carbon fiber end-cap
• Stainless steel tail-pipe
• Repack Kits, optional Inserts are available for all models