Seller notes

Fits 2003 Yamaha RX10RS RX-1 ER LE Hyvo Top Gear,br> RAD Powersports ISO 9902 certified facility Made with heat treated, case hardened machine steel High quality construction for proper fitment and maximum efficiency Compatible with Yamaha and Polaris Requires 3/4in. Hyvo top and bottom gears Must be used with Hyvo chain Yamaha Top Hyvo Gear 21 Tooth 16 Spline RAD Powersports ISO 9902 certified facility using the latest technology. Made with heat-treated, case-hardened machine steel for high-qua...

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