Crankshaft from the manufacturer 101 Octane for scooters equipped with GY6 50 / 139QMB / 139QMA 50cc 4-stroke engines with a oil pump drive gear of 16 teeth.
Standard quality crankshaft (crankshaft) for 50/90 cc 4-stroke engines (GY6 50, 139QMB / QMA). The crankshaft is supplied pre-pressed with bearings and connecting rods of the crankshaft.
In GY6 engines, two different versions of crankshafts are factory installed. They differ only by the drive gear for the oil pump on the right side. The old version is installed in almost all scooters and has a gear with 16 teeth. The new version has 22 teeth and is used on newer models.
For safety, please check the number of teeth on the gear for driving the oil pump.
The complete application list can be found below.
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