Yoshimura RS9 Stainless Dual Pipe System for Honda CRF 250 R 2018-2021 - Yoshimura Exhaust Systems
Yoshimura are pleased to announce the forthcoming Yoshimura Signature Series RS9 system for 2018 -2021 Honda CRF250!
The CRF250R's new twin cam engine and unique muffler configuration gave Yoshimura the opportunity to create an entirely new system built specifically for the new dual port cylinder and its unique downdraft fuel injection system. The distinctive dual header design is a brand new innovation from Honda. Deriving from Moto 3 bikes in Moto GP, Honda has found a new way to look at Motocross power delivery.
Dyno and track tested by Honda R&D in Japan and HRC All Japan MX Racing Team | Compact forward positioned RS-9T dual muffler design lowers eantre of gravity and mass centralization | RS-9T dual mufflers increase volume to decrease overall dB noise level.
Yoshimura's constant race development with the Muscle Milk Honda and Geico Honda race teams has helped develop this proven Signature Series RS9 system. We worked in secret with Top AMA Pro Riders: Jeremy McGrath, Justin Barcia, Trey Canard, Eli Tomac, and Justin Brayton, to achieve maximum performance, mass centralization, and optimise rider-usability. We were able to achieve all this while keeping sound levels in check with AMA Regulation.
Beginning with the head-pipe, a 3-stage tapered design results in better power, better throttle response, and usable power delivery. It is also spring mounted for increased durability.
The header flows seamlessly into a re-configured tail-pipe, where the exhaust's gases are separated to each muffler. Yoshimura's vertical divider splits the exhaust gases more evenly, for smoother flow, which improves mid-top power and throttle response.
Divided exhausts gases then reach our new, dual RS-9 mufflers, hence RS-9D. RS-9's parallelogram-shaped muffler body increases muffler volume over the stock system, resulting in better throttle response and improved noise cancellation. The dual setup enabled us to position the mufflers closer to the bike's centre of gravity (mass centralization) resulting in better handling for the rider. An additional benefit of the mass centralisation process was decreasing the potential for muffler damage in the event of the crash.
RS-9D not only makes more power and torque possible but does it more quietly than single systems. The uniquely sculpted Carbon Fibre end-caps feature a Tunable Insert System, able to fine-tune power delivery and decibel levels to rider specifications.
Motocross and Enduro sound legal... out of the box.
Full System features dual RS-9 Aluminum Sleeved Mufflers with Carbon Fibre End-caps, Stainless Steel Header and Tail-pipe, installation hardware, and detail step-by-step instructions.
Yoshimura RS9 Stainless Dual Exhaust Pipe System features:
Yoshimura Book of Speed iPhone/iPad App:
“2017 Book of Speed” works with iPhone®, iPad®, and iPod touch®. Requires iOS 4.0 or later.
Please note: These Exhausts are special order and can take upto 3-4 weeks from order date to delivery date. Special orders cannot be canceled once processing. Exhaust picture shown is for illustration purposes only.
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