Cylinder Kit polini Big Evolution 70cc 12mm LC

On only one year having marketed Evo III, Polini already presents a new improved version. The basic characteristics were kept(preserved): aluminum cylinder with opening of escape in the shape of T and 6 ports(bearings) of transfer, the whole in a proven conception(design). The outside in however be completely re-conceived(re-designed) with a round shape with side zones of cooling. The cylinder is supplied with a head of a single room(part,play). Because of the new type(chap) of escape three holes, is not all the exhaust-gas systems which can be used with this cylinder. The bore is 47,6 mm (70cc) thus in consequent on most of the tracks(runways) of running(race) will be classified 70cc. Dépendament of the carburetor and the other components used with the cylinder, you can expect