Product Details
DESCRIPTION: 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) QMB139 50cc/49cc
Additional information
| Weight | 5.1 lbs |
|---|---|
| Dimensions | 11 × 5 × 4 in |





