"Polini Cylinder Kit ""Corsa"" 70cc cast iron MBK Nitro / Aerox"

Details
The Corsa is Polini’s revised 70cc sport cylinder. Extreme port timing, polished exhaust port and increased primary compression result in up to 2–3 hp more power as compared to standard 70cc cylinders. The piston is equipped with a chrome and a grey cast iron piston ring. To be able to exploit the cylinder’s full power, it should be used in conjunction with a sport exhaust, or better still a racing exhaust such as Stage6 or Polini ForRace. Also necessary is at least a 17.5 carb to ensure sufficient internal cooling.