Yoshimura RS4 – Yamaha YZ 250F 14-15 – Stainless Exhaust System
Product Description
The work that went into developing the RS-4 muffler design has paid big dividends in Off-road Racing; winning multiple Supercross and Motocross titles since it’s inception. We’ve developed the current generation RS-4 based on that R&D, and the result is a unique design that provides an unrivaled combination of power and a quiet exhaust note. The RS-4 features a Polyresonant duplex chamber, a two-staged stepped baffle, and an innovative carbon cone end cap.
Features:
- 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
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