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