GOOFIT 50mm Big Bore Cylinder Rebuild Kit Parts Bore Upgrade Replacement For GY6 50cc 100cc 139qmb Racing Scooter

1.Products includes:Cylinder, Cylinder head,Piston, Piston ring, Piston pin, Piston pin clamp,Gear, Gaskets( Please Confirm The Size of The Parts which Has Been Marked In The Pictures) 2.Fit Model:Replacement for GY6 4stroke 49cc 50cc 100cc Engine,maximum upgrade kit for GY6 50cc 139qmb engine.ATV Dirt Bike Go Kart. 3.Premium Quality:This Brand new high quality cylinder replacement part.With High toughness,corrosion resistance,rustproof and durable.Has a good heat dissipation structure design,providing reliable performance and long life service. 4.Easy Installation,perfectly match the original one.Please check pictures for more details to make sure this part will fit before placing an order. 5.Reminder/Note:To ensure that you purchase the right product please read the product description or image size carefully.Thank you for your attention.If you have any questions or need help,please contact us before or after purchase.We will do our best to provide you with a solution.