14000590 POLINI CYLINDER D.50 85CC PK 50 S FOR VESPA SS SUPER SPRINT 50 1965-197

Details

Polini is one of the big names in the tuning of 50cc scooters, and is also one of the main producers of tuning components for VESPA, modern and vintage. Cylinders, intake manifolds, exhausts, air filters, carburettors, crankshafts and much more: everything you need to increase the performance of your VESPA Classic. Polini cast iron cylinder kit 85cc (d=50mm) for VESPA V50 / PK / XL, cast iron cylinder with 50mm bore. This 50mm diameter cylinder will increase displacement to a total of 84cc, whilst allowing the original crankshaft to be retained, and an increase in displacement leads to a higher top speed. The timing is ideal for racing, with an impressive increase in torque throughout the entire rpm range. The cylinder has 6 ports and a 2-ring piston with low friction coating. This extremely reliable cylinder will increase torque and overall performance and is suitable for stock or near-stock engines. Produced by Polini, everything is made to very high quality standards. The optimal RPM is approximately 7,700 rpm with a power of 8.5 HP. Always make sure that other engine components such as the crankshaft, bearings and manifolds are in excellent shape, otherwise performance may suffer, even with a powerful cylinder. cylinder, head, piston, cast iron cylinder gaskets, high compression aluminum head Displacement 84cc - bore 50mm spark plug with long thread