RK Chain Kit - Natural - Yamaha - YZF-R1 '15-'23 4107-159P

Chain Kit - Natural - Yamaha - YZF-R1 '15-'23
Kit includes a premium Driven? C45 steel alloy black case hardened rear sprocket paired with Driven? C45 steel case hardened and quenched front sprocket, RK*s 520 Steel Quick Acceleration Race Kit combines the enhanced performance of race gearing and durability of steel components, Kit includes a one-tooth-smaller-than-OE front sprocket