cylinder kit Polini cast iron sport 63cc 12mm piston pin for Piaggio, Vespa Bravo, boss, Grillo, SI 140.0133

Polini 63ccm cast iron sport cylinder kit from Polini for Piaggio / Vespa Bravo, Boss, Grillo, SI, CBA and Eco mopeds with 12 mm gudgeon PIN. The cylinder has a 43mm bore and achieves an output of 4.5bhp at 8,400RPM according to manufacturer´s claims.