Cilindro Polini 152cc in alluminio, Ø 60mm, corsa 54mm, biella 105 per Vespa 50-Primavera - ET3

Polini manufactures an Evolution thermic unit with reed valve in the cylinder for Vespa 125 Primavera ET3. Thanks to its 152 cc displacement, it has very high power characteristics in all conditions of use and in all types of competition. The Evolution reed valve in cylinder kit comes complete with: cylinder, piston, head, reed valve pack, intake manifold and gasket set. The cylinder is cast in aluminium with a Ø 60X54 mm bore. The barrel with Nikel-Silicon coating improves piston sliding, wear and abrasion resistance. Six transfer ports. The exhaust has a central sleeve to increase exhaust gas evacuation. The distribution diagram is designed to make the most of the power of all components. The Polini Evolution Kit for Vespa has the head cast in one piece