Primary Drive Alloy Kit & X-Ring Chain Blue Rear Sprocket For YAMAHA WR250F 2020-2022

Sprocket kits include the following. Stock size Primary Drive steel front sprocket. Stock size Primary Drive Alloy rear sprocket. Stock size Primary Drive X-Ring chain. Front sprockets are manufactured to O.E.M., specs using high grade hardened steel. Rear Aluminum Sprocket made from 7075 T-6 heat treated Aluminum. Come with self-cleaning grooves. All match original equipment exactly perfect fit and size. The ORH X-Ring chain is Primary Drives best off-road chain permance and durability. X-Ring shape provides an outstanding seal with reduced friction. Average tensile strength 8,120 lbs.