cylinder kit Polini cast iron sport 63cc 12mm piston pin for Piaggio Ciao 140.0065

63cc cast iron sports cylinder kit by Polini with 12 mm gudgeon pin for 50cc Piaggio / Vespa Ciao mopeds. The cylinder has a 43mm bore and achieves an output of 4.5bhp at 8,400RPM according to manufacturer´s claims.