Description

The Polini Big Evolution Crankshafts are developed for use with the Polini Big Evolution 94ccm cylinder kit and are therefore made with rod85 connecting rod and have a stroke of 44mm. It is a full-throw Crankshafts which increases the primary compression and the connecting rod is also forged, resulting in greater strength. The shaft on the Variators side is significantly larger than on a regular Crankshafts, which is why a spacer, backplate and bushing for the Variators are included, as well as Nuts, Needle Bearings and shim washers. NOTE: The Crankshafts are for ø13mm crosspin and due to the size of the vanes, it is necessary to mill the crankcase before this crank can be installed.