This product is ideal for owners of 139QMB or 139QMA mopeds, like the GY6 model, which require a 44mm cylinder head assembly with compatible valves.
GY6 60cc Scooter Engine 44mm Cylinder Head Assembly With Valves Compatible With 139QMB 139QMA Roketa Qingqi ZNEN Moped
57.4MM Cylinder Block Compatible With GY6 150CC Scooter Engine Replaces GY150-3004
47MM Cylinder Block Compatible With GY6 50CC Scooter Engine Replaces GY80-4004
57.4MM Cylinder Compatible With GY6 150CC Scooter Engine Replaces GY150-3002A(Without valve)
Motorcycle cylinder kit For 4T 152QMI ATV Go Kart Buggy Moped Quad Glixal GY6 125cc Scooter Engine 52.4mm Cylinder Head Assy With Valves Motorbike Pistons & Rings
GY6 100cc Scooter Engine 50mm Big Bore Cylinder Head Assy Fit For 4T 139QMB 139QMA R Z Moped (69mm Valves)