Special Notes: Notes for Kit Item: Primary Drive 51 Tooth Silver Aluminum Rear Sprocket. You must use a tapered style sprocket bolt (part # 1096010001) for this sprocket to work on a Honda CRF300L. -Rear aluminum sprocket made from 7075 T-6 heat treated aluminum. - Comes with self cleaning grooves. - All match original equipment exactly for perfect fit and size. - ORH Gold X-Ring chain is Primary Drives best off-road chain for performance and durability. Features gold plating on the plates. -The X-ring shape provides an exceptional seal with reduced friction. -Average tensile strength 8,120 lbs.