1. Perfect Compatibility: Cylinder piston kit is replacement for 49cc 2 Stroke Engine Mini Moto Dirt ATV Quad Pocket Bikes Minimoto Motorcycle. 2. High quality material: The cylinder piston bearing kit is made of high quality metal material, anti-rust, anti-corrosion and durable. 3. Function: Cylinder piston seal kit helps increase thermal efficiency, support the piston and reduce friction and leakage. 4. Excellent performance: The cylinder piston set is professionally produced, in accordance with standard specifications, high sensitivity, reliable and stable. 5. Easy installation: The motorcycle cylinder piston kit is easy to install, does not require modification, cutting or drilling, and is not easy to fall off. Specification: Item Type: Cylinder Piston Kit Material: Metal Compatibility: Replacement for 49cc 2 Stroke Engine Mini Motorcycle Dirt ATV Quad Pocket Bikes Mini Motorcycle Motorcycle Package List: 1 Cylinder 1 Piston 1 x Gasket 2 Clasps 1 x Safety Pin 1 Bearing 2 x Iron Hoop