Seller notes

Fits 2003 Yamaha RX10R RX-1 ER Hyvo Top Gear,br> RAD Powersportss ISO 9902 certified facility. Made with heat treated, case hardened machine steel. High quality construction. Proper fitment and maximum efficiency. Hyvo gears for Polaris and Yamaha. 3/4in. Hyvo top and bottom gears. Not interchangeable with previous models or styles. Must be used with Hyvo chain. RAD Powersportss ISO 9902 certified facility using the latest technology. Made with heat-treated, case-hardened machine steel. High-qua...

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