Cylinder Kit AC Polini For Race 70cc 12mm Piaggio

As traditionally for aluminum cylinders from Polini, this cylinder was manufactured by the excellent Gilardoni foundry, the largest in Italy. In addition to its very good manufacturing quality, this Piaggio Polini Aluminum 70cc cylinder head assembly is also powerful enough for 70cc “Sport” range. Even if it is designed for intensive use, it is still much more torquey and more powerful than the original cylinder, especially in the mid and high revs. With the appropriate configuration (17.5mm/21mm carburettor and “Sport” exhaust) it can develop around 10/11 hp, with a top speed also increased because at a higher maximum engine speed than the original.


- 70cc aluminum cylinder diam.47.6mm
- 6 transfers
- Mono-segment piston
- High compression cylinder head
- Kit of seals necessary for assembly