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Developed in conjunction with AMA Pro Supercross / Motocross teams, this evolutionary exhaust system combines power, light weight, and centralized mass to give you the confidence to dominate the race track. The RS-4 is a unique design with predicated power, a side benefit of a quiet earthy exhaust note that speaks volumes for performance and offers increased horsepower and torque. The RS-4 features all the benefits of the original RS-4 muffler, but with a unique turned-out end-cap, designed to direct exhaust heat and gases away from the bike's components. It features a polyresonant duplex chamber, a two-staged stepped baffle and an innovative carbon cone end-cap.
Product Variant | Manufacturer Part # |
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Signature / Carbon Fiber Yoshimura RS-4 Pro Series Titanium Full System Exhaust | 231021D720 |
WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. For more information, go to www.P65Warnings.ca.gov.