Primary Drive Alloy Kit Gold Plated MX Race Chain Blue Rear Sprocket For YAMAHA YZ250F 20012006

Sprocket kits include the following. Stock size Primary Drive steel front sprocket. Stock size Primary Drive Alloy rear sprocket. Stock size Primary Drive Gold Plated MX Race chain. Front sprockets are manufactured to O.E.M., specs using high grade hardened steel. Rear Aluminum Sprocket made from 7075 T6 heat treated Aluminum. Come with selfcleaning grooves. All match original equipment exactly for perfect fit and size. High quality 520 race chain. Features gold plating on the plates. Average tensile strength 8,900 lbs. Master Link included.