Yoshimura Works RS-4 Street Series Slip-On Exhaust

Yoshimura’s Street Series exhausts do not require tampering with your vehicle’s emissions control system while still delivering that special spirit the world has come to expect from a Yoshimura exhaust.

Yoshimura’s Works Finish takes on a unique coloring after it goes through a heat cycle on the machine that looks much like those titanium works components many factory racers use.

Contemporary satin/matte finish

Uniform heat coloration

Increased fatigue strength

Increased scratch and stain resistance

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

Includes all required hardware and installation instructions

Product Note: