Blue Alloy Rear Sprocket Kit with O-Ring Chain for Yamaha YZ250FX (2015-2025) - Durable Off-Road Motorcycle Replacement for Trail & Motocross Racing

Special Notes:Notes for Kit Item: Primary Drive Rear Aluminum Sprocket 51 Tooth BlueYou must use a tapered style sprocket bolt (part #1096010001) for this sprocket to work on a Yamaha WR250R. -Rear Aluminum Sprocket made from 7075 T-6 heat treated Aluminum. -Come with self-cleaning grooves. -All match original equipment exactly for perfect fit and size. -The ORM O-Ring chain provides outstanding durability and long wear characteristics making it perfect for motorcycles and ATV's. -Features solid bushings with high quality pin material, O-rings and lubricant. -The unique design and profile of the chain ensures durability, and decreases wear on chain guides and swing arm rub plates. -Average tensile strength 7,850 lbs. -Clip style Master-Link included.

See fitment guide image for additional Machines this item fits. Sprocket kits include the following

Stock size Primary Drive steel front sprocket

Stock size Primary Drive Alloy rear sprocket

Stock size Primary Drive O-Ring chain

Front sprockets are manufactured to O.E.M., specs using high grade hardened steel.