Good quality 50cc standard grey cast iron cylinder kit from Italkit. E.g. for Keeway, Generic, CPI scooters (Euro2) with 12mm gudgeon pins and Minarelli-based 50cc 2-stroke engines with 12mm gudgeon pins. The kit is sent with all the necessary parts and gaskets. The performance matches that of the original cylinder. This kit is a suitable aftermarket replacement for damaged cylinders or pistons.