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 75cc (d=47mm) Vespa 50cc V50 / PK / XL, cast iron sports 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 large exhaust 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 7,700rpm. 7.5hp can be easily achieved.
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
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.
Spare Parts
- Polini
Piston Polini D.55mm 102cc Vespa 50 Special / PK 50 / S / Ape62,50 €Currently not in stock - Polini
Piston Ring 55x1,5mm Polini aluminium 152cc Vespa Primavera 125cc ET38,10 €Currently not in stock - Polini
Cylinder Gasket Set Polini Vespa 50 APE FL / FL2 / FL3 / RS / Primavera 125cc ET33,90 €Ready for dispatch shortly
