ProX offers a complete line of piston pin bearings for the Dirtbike, ATV, PWC and 50cc / scooter segment. The pistons pin bearings are manufactured by the leading Japanese O.E.M. factories. All pistons pin bearings are designed and developed to O.E.M. specifications and are a direct and cost efficient O.E.M. replacement. Full line of piston pin bearings for Dirtbike, ATV and 50cc / scooter available from ready stock. Note: Image is for display purposes ONLY.