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 aluminium 68.5mm Vespa PE / PX 200cc, aluminium cylinder with 68.5mm bore by Polini.
This 68.5mm diameter cylinder + 60mm stroke will raise displacement to a total of 221cc; it has to be combined with a long stroke crankshaft. Increased displacement leads to higher top speed. Port timings are designed for racing, with an impressive boost in torque throughout the entire rpm range.
7 Nikasil-plated transfer ports and cylinder head design improve the quality and quantity of air flow. Heat dissipation is excellent, and the 2-ring piston has a low-friction coating.
And, made by Polini, everything is manufactured according to very high quality standards.
- cylinder, cylinder head, piston, gaskets
- aluminium cylinder + high compression head
- 221cc displacement - 68.5mm bore
- long stroke (60mm) crankshaft is needed (not included)
- 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.
Aluminium cylinders
Aluminium cylinders are more powerful than cast iron cylinders, but require more regular maintenance and must be combined with different components such as a reinforced crankshaft and a larger carburetor.
How to run in an aluminium cylinder?
Aluminium cylinders should be run in for about 200 kilometers , and you should use a fully synthetic engine oil.
Note: To ensure optimum performance and reliability, it is advisable to measure the squish clearance. Just have a look at our tutorial How to adjust squish clearance.