The work that went into developing the RS-4 silencer has paid big dividends in Off-road Racing, winning multiple Supercross and Motocross titles since it’s inception.

The current generation RS-4 is based on that research and development, and the result is a unique design that provides an unrivalled combination of power and quiet exhaust tone.

• Pentagonal-shaped sleeve
• Front silencer cap functions as a polyresonant chamber which helps reduce noise
• Laser-cut heat shield on polyresonant chamber
• Two-stage stepped baffle
• Turn-out carbon fibre end-cap
• Stainless steel header and tail-pipe

This exhaust is designed and intended for closed course competition use only, and is labelled as such, it is neither designed or intended for use on public roads or land.