Polini Corsa 47mm (70cc) Horizontal Minarelli Big Bore Cylinder and Head Kit. Kit includes cylinder, aluminum cylinder head, piston, rings, piston pin and bearing, cir clips, head gasket, base gasket, exhaust gasket, exhaust studs, and spark plug.
When you use this Polini 47mm Big Bore Kit in conjunction with your stock crankshaft you will increase your total displacement to 70cc! The manufacturer claims 11.5bhp at 10,600RPM is possible with this kit.
Fits the following and more: