1 Perfect Fit: The cylinder piston kit can replace 49cc 2-stroke engine Mini Moto Dirt ATV Quad Motorcycle Mini Motorcycle. 2 High-quality materials: The cylinder piston bearing kit is made of high-quality metal materials, which is rust-proof, corrosion-resistant and durable. 3 Function: The cylinder piston gasket kit helps to improve thermal efficiency, support the piston and reduce friction and leakage. 4 Excellent Performance: The cylinder piston set is professionally produced to meet standard specifications, with high sensitivity, reliable and stable. 5 Easy to install: The motorcycle cylinder piston kit is easy to install, without modification, cutting or drilling, and is not easy to fall off. Item Type: Cylinder Piston Kit Material: Metal Accessories: Replacement 49cc2 Stroke EngineMiniMotoDirtATVQuadPocketBikesMinimotoMotorcycle 1 x Cylinder 1 x Piston 1 x Washer 2 x Retaining Rings 1 x Safety Pin 1 x Bearing 2 x Iron Hoops