Crankshaft 45mm for Jog90 3WF and Jog50 3KJ long stroke +3mm

This size of crankshaft need to be used with big bore cylinder kit 54mm.

Engine milling is not necessary for this size of crankshaft if you installing on Yamaha Jog90 3WF engine.

Pay attention: to install this size of crankshaft for Yamaha Jog50 engine boring is required!