All Street Series systems are Slip-on/Bolt-on applications that do not require tampering with the vehicles emissions control system, yet still deliver that special spirit the world has come to expect from the legendary company known as Yoshimura. The Street Series exhaust offer street-legal options for almost everything on two wheels.
CARB/EPA tail-pipe emissions compliant
All applications are marked with appropriate EPA noise emissions labels
Has not been tested for EPA noise compliance
RS-4 for Road Racinga 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.
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 tail-pipe
Yoshimura Works Finish takes on a unique coloring after it goes through a heat cycle on the motorcycle that looks much like those titanium works components our factory racers use.
Contemporary Satin/matte finish
Uniform heat coloration
Increased fatigue strength
Increased scratch and stain resistance
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