Type Cylinder Head Assembly With Fit For Roketa Bike Fit For Jonway Moped Fitb For GY6 49cc 50cc 139QMB Scooter Engine

I don't know if the cylinder block you use for your motorcycle is suitable? Please contact us to provide photos and models, and we will help you confirm.Length-64mmIntake Diameter- 18.5mmDisplacement (ml) : 50ccNo. of Cylinders : 1 CylinderItem Diameter : 3.9cmItem Weight : 1.5kgModel Name : GY6 50ccMaterial : aluminiumEngine Type : 4 Stroke, CoolingEngine Model : 139QMA 139QMB 1P39QMA 1P39QMB

• Precision parts, it is recommended to seek professional mechanics for installation.
• Applicable models and part numbers: Applicable to motorcycles, power-assisted bicycles, GY6 49cc, 50cc, 139QMB scooter engines, type cylinder head assembly with valves, part number not specified.
• Quantity: 1 pc
• Improve performance: The cylinder head design optimizes the intake, and the makes the intake smooth, improves power output and torque, and accelerates more smoothly.
• Easy installation: The structural design is reasonable, well matched with the engine installation part, and can be easily installed according to conventional operations.
• Long-term use: Reliable material, wear-resistant and corrosion-resistant, stable performance, and reduced failure.