Polini Cylinder Kit Racing 75cc (d=47) Vespa 50cc V50 / PK / XL

Polini is one of the big names in 50cc scooter tuning, and is also one of the leading manufacturers of tuning parts for Vespa, modern and vintage. Cylinders, intake manifolds, exhausts, air filters, carburetors, crankshafts and more - everything you need to boost the performance of your Classic Vespa.

Polini Cylinder Kit Racing 75cc (d=47) Vespa 50cc V50 / PK / XL, cast iron racing cylinder with 47mm bore by Polini.

This 47mm diameter cylinder will raise displacement to a total of 75cc while allowing to retain the original crankshaft, and increased displacement leads to higher top speed. Port timings are designed for racing, with an impressive boost in torque throughout the entire rpm range.

The cylinder has 6 transfer ports, a divided boost port and a 2-ring piston with low-friction coating. Cooling properties are excellent, so this cylinder allows for intense use. Optimum RPM range is approximately 8,100rpm.

And, made by Polini, everything is manufactured according to very high quality standards.

• cylinder, cylinder head, piston, gaskets
• cast iron cylinder, aluminium head
• 75cc displacement
• long thread spark plug