70cc gray cast iron racing cylinder kit from Polini for scooters with air-cooled Minarelli horizontal engine.
The cylinder has a bore of 47mm and, according to the manufacturer, achieves an output of 11.5 hp at 10,600 rpm.
The cylinder has a bore of 47mm and, according to the manufacturer, achieves an output of 11.5 hp at 10,600 rpm.
