Cylinder head Polini Racing for 133cc Vespa V50, ET3, SS50, SS90
With appearance of the Polini Evolution cylinder kits at the scene, the cast iron barrels got updated as well. From then on the Polini cast iron barrel is labeled as Polini 133cc Racing. The most innovative feature is the new Polini 133 Racing cylinder head. A massive head with enlarged cooling fin area, CNC machined […]
