Yoshimura Signature/Enduro RS-4 Full System - KTM 250/350 SX-F/XC-F

The RS-4 features a duplex chamber, a two-staged stepped baffle and an innovative carbon cone end cap. Stainless systems come with both a 94db and AMA 2-m Max sound insert.

• Pentagonal-shaped sleeve
• Front muffler cap functions as a polyresonant chamber which helps reduce noise
• Two-stage stepped baffle
• Carbon fiber end-cap
• Stainless steel header and tail-pipe