In addition to their aesthetics, the Yoshimura USA RS-4 Muffle are at the cutting edge of exhaust technology.
- A high-performance muffler 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