High quality Polini crankshaft for gear shift moped with 50cc Derbi D50B0 engine. The thrust washers and the lubrication hole on the upper connecting rod eye increase the longevity / mileage of the shaft.
The connecting rod length corresponds to that of the original crankshaft. This makes the Polini crankshaft suitable for 50cc / 70cc sport / racing cylinder kits. The delivery includes Polini piston pin / small end bearings.

We recommend that you always replace the crankshaft bearings when replacing the crankshaft.