Polini 47mm Horizontal Minarelli Corsa Cylinder Kit

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:Yamaha Jog and Zuma (02-12) Aprilia Scarabeo 50Malaguti Ciak, F10, F12 and F15 A/C, and Yesterday 50PGO Big MaxGenuine Buddy 50 and Roughhouse 50Eton Beamer 2Please see our Warranty & Returns Policy. *You may need to modify your engine case to accommodate the larger cylinder. Upgrades to 70ccShips from Factory with Ring Installed on PistonCylinder Bore: 47mm Cylinder Sleeve Outer Diameter: 50.8mm Wrist Pin Diameter: 10mm