The RS-4 Full System has a unique design that provides an unrivaled combination of power and a quiet exhaust note.
The work that went into developing the RS-4 muffler 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 research & development, and the result is a unique design that provides an unrivaled combination of power and quiet exhaust tone. The RS-4 features a Polyresonant duplex chamber and two-staged stepped baffle for increased performance, while a carbon cone end cap finishes off its innovative styling.
FOR CLOSED COURSE COMPETITION ONLY; NOT INTENDED FOR STREET USE.
- Pentagonal-shaped sleeve
- Front muffler cap functions as a polyresonant chamber which helps reduce noise
- Laser-cut heat shield on polyresonant chamber
- Two-stage stepped baffle
- Turn-out carbon fiber end-cap
- Stainless steel header and tail-pipe
Availability: From time to time, exhausts may not be readily available instore for shipment and may require backordering from the supplier. It is recommended that you contact us prior to making your purchase to enquire about despatch times.