Stock: 195cc, air-cooled, Reed valve, 2 stroke Cylinder Displacement 195cc / Compression 6.6:1. Package Includes: 1x Cylinder 1x Piston 1x Piston Pin 2x Piston Rings 2x Circlips 1x Needle Bearing 1x Head Gasket 1x Base Gasket 1x Valve Gasket 1x Spark Plug (Just as picture shown). Other items you might also like. Every message will be replied within 12 hours on 7x24 hours. 7x24 hours, always here for you.