Chinese Crankshaft - GY6 50cc Engine
Chinese 50cc crankshaft fits several makes & models. Please use the pictures and measurements to best match your crank.
Crank shaft details:
- Overall Length: 24cm [9.45"]
- Bearing size/model: 20 X 47 X 14 
- Bearing size/model: 20 X 42 X 12 
- 22 tooth oil pump drive gear
- Sprockets: 17 teeth each
- Spline count on end of shaft: 26 spline
- Thread size on tapered end: M10 x 1.25
- Thread size on straight end: M12 x 1.25
Known to fit GY6-50 engines.
So far so good it's only been a day. Only time will tell