cylinder kit Polini cast iron sport 70cc 12mm piston pin for Piaggio Ciao 140.0066

70cc cast iron sports cylinder kit by Polini with 12 mm gudgeon pin for 50cc Piaggio / Vespa Ciao mopeds. The cylinder has a 46mm bore and achieves an output of 5.5bhp at 8,600RPM according to manufacturer´s claims.