Vespa PK 50 Polini 47mm "75cc" Racing Cylinder Kit 4.5 this head can lower temps

this head can lower temps due to a better combustion geometry and make more power from a squish band that is designed to work with the stepped face of the Polini piston

and clutch springs

EV Racing exhaust in chrome with silver

Comes with a full top end gasket set

Vespa PK 50 Polini 47mm "75cc" Racing Cylinder Kit 4.5 this head can lower tempsPolini 47mm 75cc R series cylinder kit for Vespa PK 50 and Ape 50. Cast iron cylinder kit with large exhaust port and 2 auxiliary ports and 6 transfer ports. Comes with cylinder, piston, rings, pin clips, cylinder head, gasket kit, and a big bag of hardware for installation. From Polini : Polini refreshes the famous kit for Vespa 50cc with 47. The main feature is the new chilled head. It has a modern design that makes it stronger with a perfect squish