Skip to content
50cc Bike
Article no.: P166.0096

Cylinder Polini Evolution 50cc aluminium piston pin=12mm Yamaha Neo's / Ovetto

Sorry, this Item has been Discontinued

This product is no longer being manufactured, so unfortunately we can no longer offer it.

However, we would like to help you find an alternative. Please take a look at other products within the same category or contact us so we can help you with selecting the right product.


A great favourite on the race tracks for years: Polini 50cc Aluminium Cylinder Kit "Evolution" MBK Ovetto / Neo's, 12mm (Minarelli horizontal AC, 12mm pin).

The kit includes:

  • Aluminium Cylinder, d = 40.2mm, with 5 transfer ports and bridged exhaust port
  • Single-Ring Piston, 12mm pin
  • High-Compression Aluminium Cylinder Head
  • Carbon Fiber Reed Petals (2x), 0.35mm
  • Gasket Kit for mounting

This street-legal cylinder kit is definitely one of the most powerful 50cc kits on the market. Originally developed for the race track, it can just as well be used on the road.

We recommend combining it with a 17.5mm carburetor (minimum), a reinforced crankshaft and a sports or racing exhaust; moreover, regular maintenance is essential if you want to use it as an everyday cylinder (regular replacement of piston ring/piston).

Questions about the product
Notes and Safety

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: High End racing

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.

High End Racing products are exclusively designed for racing and should only be handled by tuning pros with the appropriate technical know-how. High-end racing parts often require modifications or machining of certain elements to accommodate the often larger components (larger crank webs, larger intake, etc.). Whether you stick with 50cc or increase the displacement, high-end racing parts offer much higher performance than the original parts and are the most powerful tuning parts.

Note: To ensure the reliability of the engine, it is important that the parts are compatible and that you do regular maintenance on your two-wheeler.

    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.

    Technical details
    Cylinder Polini Evolution 50cc aluminium piston pin=12mm Yamaha Neo's / Ovetto
    Article no.P166.0096
    Weight1,26 kg
    Product typeCylinder kit
    Tuning levelHigh-end
    Piston pin12 mm
    Cylinder materialAluminium
    Bore40 mm
    Conrod lengthStandard
    Compatible vehicles for this article
    Customer reviews
    Be the first to review this product!
    Write a review
    Shopping cart

    JavaScript ist in Ihrem Browser deaktiviert.
    Bitte aktivieren Sie JavaScript um unseren Webshop nutzen zu können und laden diese Seite erneut.

    Back to top