BGM Pro Spezial crankshaft with the hub and connecting rod of the 50ccm models (43mm / 87mm) combined with the large alternator stump (Ø24 / 25mm) of the PK125 ETS models. Most stable 50cc crankshaft on the market, fits into every smallframe housing with the appropriate bearing: V50, PK S, PK XL, PK XL2! For conversion bearings see accessories. Suitable for the following engines to use cylinders for V50 / PK50 [...]