MAZZUCCHELLI Racing Crankshaft 60mm (Reed Valve) Vespa PX200, RALLY200, COSA200MAZZUCCHELLI Racing Crankshaft 60mm (Reed Valve) Vespa PX200, RALLY200, COSA200 Engineered for reed valve systems and direct intake racing cylinders, this MAZZUCCHELLI full circle crankshaft delivers enhanced performance across the entire rpm spectrum. The precision manufactured design minimises bearing clearance and maintains exacting tolerances, ensuring reliable operation at sustained high speeds. By optimising rotational dynamics, it provides