Suzuki RMZ450 2018-2021 - Yoshimura Signature Series RS-4 Slip On Stainless/Al/Carbon

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Please choose your item carefully using the below drop box, as some items may not represent the picture – if you have any questions please feel free to contact us before placing your order

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