Cylinder kit Polini For Race 75cc 12mm - Ciao

The new Polini Ø 47 cast iron cylinder kit with 4 studs has been designed for a specific combination with the Polini For Race crankcase for all Ciao, Si, Bravo, Boss, Grillo mopeds. The drilling involves the fixing of the cylinder by means of 4 studs that ensure a more efficient distribution of the stresses during operation and allow a centered discharge with the axis along which the washing process develops and a thin crossbar. Further technical features: exhaust transfer with booster holes, one piston ring, head gasket in annealed aluminum. All these are important details that guarantee better performance.