US Dollar
The RS-4 is pentagonal shaped muffler that features a carbon fiber cone end cap, two staged stepped baffle and striking good looks. The RS-4 muffler features a new front cap design that functions as a polyresonant chamber. thus creating a more quiet muffler with improved mid to top end power. Along with improving sound and power, this system moves the muffler weight lower and closer to the bike for improved handling and weight distribution. Yoshimura continues to provide the best in performance exhaust systems.
* Deliver huge power at a very light weight
* Offers better handling thanks to a lower centralized mass coefficient
* Uniquely-styled pentagonal muffler body with a carbon fiber cone end cap
* Front cap design functions as a polyresonant chamber to lower dB output while improving mid- to top-end power
* Two-staged, stepped baffle
* Tapered headpipe delivers optimal flow and performance
* Systems include 94 dB insert installed (meets AMA competition requirements), 2 meter Max insert in the box
Yoshimura RS-4 Full Exhaust for YZ450F 18
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