Yoshimura RS-9T Stainless Dual Slip-On Exhaust | Honda CRF450R / CRF450RX 2017-2018

The Yoshimura RS-9T Dual Slip-On Exhaust is a pair of bolt-on mufflers for the 2017-2018 Honda CRF450R and CRF450RX, built on Yoshimura's stainless RS-9T architecture and mounting directly to the stock headers.

This generation of CRF450R runs a twin-muffler layout, so the kit supplies both canisters rather than one. That is also why it is the single most effective weight change available to the bike: two stock mufflers is a lot of mass carried high and to the rear, and replacing both at once removes considerably more than a single-canister swap would.

The RS-9T was Yoshimura's motocross canister before the RS-12 took over, and it remains the correct fitment for this chassis. Both canisters accept Yoshimura's low-volume sound inserts and spark arresters.

• Pair of bolt-on slip-on mufflers — retains the stock headers
• Stainless steel RS-9T construction
• Dual-muffler kit supplying both canisters
• Accepts Yoshimura low-volume sound inserts and spark arrester inserts
• Substantial weight reduction over the two stock mufflers
• Yoshimura part number 961-1909
• Made in the USA by Yoshimura R&D of America

Fits the 2017-2018 Honda CRF450R and CRF450RX as a direct bolt-on to the stock headers. Fit approved spark arrester inserts before riding on US Forest Service or BLM land. Contact us to confirm the exact muffler sleeve material for this part number before ordering if that matters to your build.