Pro. X offers a complete line of piston pin bearings for the Dirt bike, ATV, PWC and 50cc/scooter segment. The pistons pin bearings are manufactured by the leading Japanese Orig. Equipment factories. All pistons pin bearings are designed and developed to Orig. Equipment specifications and are a direct and cost efficient Orig. Equipment replacement. Full line of piston pin bearings for Dirt bike, ATV, PWC and 50cc/scooter available from ready stock. Piston rod-end needle cage bearing.