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Orders over $79.00 will receive free shipping. This is a residential delivery service, deliveries Monday through Friday from 9:00am to 8:00pm.
Learn MoreDeveloped 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 # |
---|---|
Race / Stainless Steel | 123410D520 |
Signature / Aluminum | 262500D321 |
Signature / Aluminum With Carbon Fiber End Cap | 262510D320, 264600D320, 231020D320 |
Signature / Stainless Steel With Aluminum Muffler | 264620D320 |
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.