POLINI Racing Vespa T5 152 Cylinder Kit (Inc Cylinder Head)POLINI Racing Vespa T5 152 Cylinder Kit (Inc Cylinder Head) The 152cc Polini cast iron cylinder is a reliable component for everyday usage. It can be utilized with the original cylinder head and only requires the replacement of the main nozzle with a size 125 for optimal performance. This modification results in a powerful and enjoyable driving experience, producing 13. 7hp at 6500 rpm (16. 5NM at 4850 rpm) on a completely original engine with the