Yoshimura RS-4 Race Series Full Exhaust System

If you’re looking for that competitive edge, look no further than Yoshimura’s Race Series exhausts. These exhaust components are designed with nothing but power in mind. Each Race Series system is developed in accordance with noise compliance regulations imposed by most race sanctioning bodies worldwide.

The work that went into developing the RS-4 muffler design paid big dividends during development in AMA Pro Racing. That research was directed at developing the RS-4’s unique design that provides an unrivaled combination of power and a quiet exhaust note. The RS-4 muffler features a polyresonant duplex chamber, a two-staged stepped baffle and an innovative carbon cone end cap.

Pentagonal-shaped sleeve

Front muffler cap functions as a polyresonant chamber to reduce noise

Two-stage stepped baffle

Carbon fiber end-cap

Stainless steel header and tail-pipe improves flow over the stock exhaust

Includes all required hardware and installation instructions

Removable low-volume insert

Product Note: