SSP-G QMB139 Stroker Crankshaft
44mm Stroker Crankshaft Assembly for 50cc 4-stroke QMB139 engines.
- Overall Length: 247mm
- Thread Size (tapered side): M10x1.25
- Thread Size (spline side): M12x1.25
- Bearing Outer Diameter (tapered side): 42mm
- Bearing Outer Diameter (spline side): 47mm
- Number of Splines: 26
- Connecting Rod Inner Diameter: 13mm
- Number of Teeth (oil pump drive gear): 16 (use with 33t oil pump)