Description
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 115cc (d=57,5mm) Vespa 50cc V50 / PK / XL, cast iron sports cylinder with 57.5mm bore by Polini.
This 57.5mm diameter cylinder will raise displacement to a total of 125cc 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 8,200rpm.
And, made by Polini, everything is manufactured according to very high quality standards.
- cylinder, cylinder head, piston, gaskets
- cast iron cylinder, high-compression aluminium head
- 125cc displacement
- long thread spark plug
How to Install a cylinder on a scooter, motorcycle or moped
The cylinder or cylinder kit is the heart of the engine on scooters, motorcycles and mopeds. It consists of a cylinder, a piston with piston ring(s), a cylinder head and gaskets needed for installation.
The service life of a cylinder depends on whether it has been fitted correctly.
Tuning Level: Sport
We categorize our products into different performance levels Original, Sport, Racing and High End , so that our customers can choose the right parts for their setup. It is really important to combine parts that belong to the same tuning level, this is especially true for cylinders, crankshafts and exhausts.
The products listed under Sport yield better performance than Original parts. They may have technical differences, such as the use of higher quality materials, a larger displacement or a performance-enhancing design. They are suitable for everyday use and have a long service life.
