Polini big bore kit for Euro II type Minarelli / Chinese

OK for racing! This high performance 70cc sports/racing kit by the legendary Polini (Italy) offers the following features: Alloy head with computer designed squish band Wide exhaust port for maximum port-time area Cast iron cylinder for high temperature shape stability and long life Also includes new exhaust studs and gasket set The exhaust port flange of this cylinder is angled slightly rearward AND to the side. To suit horizontal 2 stroke engines in the Yamaha / Minarelli style, with 12mm gudgeon pin. Includes many Keeway, CPI, CMG, and all Urban R4 engines. Sample image shown. This kit must be fitted and the carb tuned by a technician or skilled person. Piston seizure is a symptom of poor carb tuning and claims regarding these kinds of problems will not be accepted. This kit increases engine size to 65cc so your bike may not be legally registered as a moped.