GOOFIT 39mm Piston Rings Kit Replacement For GY6 49cc 50cc 139qmb Taotao Baja Jonway Lance Scooter

1.Size:The piston diameter:39mm,piston pin diameter:12mm,length of piston pin:30mm 2.Fit model:The item fits for GY6 49cc 50cc with 139qmb Engine. 3.Package list:piston*1 piece，Piston pin*1 piece，Mounting washer*1 set,BeautIful keychain*1 4.The main role of the piston is to withstand the combustion pressure in the cylinder and transmit this force to the crankshaft through the piston pin and connecting rod 5.Reminder / Note: To make sure you buy the right product, please read the product description carefully or the image size. Thank you for your attention. If you have any problems or need help, please contact us before or after your purchase. We will do our best to help you with the solution