(1Set 50mm Bore Piston Rings Kits For 100cc Engine Motorised Bicycle Bike Scooter. Suitable for: 100cc Engine Motorised Bicycle Bike Scooter. Item included: 1 x Set (5Pcs) Piston Rings. 5) These parts are used to replace motorcycle piston ring kits for repair and upgrade of original cylinders to provide better performance.
