piston kit Polini 41.4mm 12mm piston pins for Piaggio, Vespa Bravo, boss, Ciao, Grillo, SI 204.0054

Polini oversize piston with 41.4mm for the 57cc Polini sport cylinder for Piaggio / Vespa Bravo, boss, Ciao, Grillo, SI, CBA and Eco mopeds with 12mm gudgeon pin. The kit comes with 2 piston rings, gudgeon pin and 2 piston clips.