In addition to their aesthetics, the Yoshimura USA RS-4 full systems are at the cutting edge of exhaust technology.
- A high-performance stainless exhaust system that optimises the power output of your machine
- product is a direct result of MX World and US championship development
- 2 cores inside the RS-4 muffler: double sound absorption and reduced adverse effects caused by exhaust gases
- muffler fabricated from aluminium/stainless with carbon end cap









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