Stage 6 Sport Pro MKII 70cc cylinder kit, CPI etc

OK for racing! Sport Pro MK2 cylinder kit. This all alloy 70cc high performance kit by Stage 6 (Germany) offers the following features: Milled cylinder head with computer designed squish band Wide exhaust port for maximum port-time area Nicasil/chrome coated wall, high grade aluminium cylinder Single chrome ring for low resistance New carbon fibre reed valve petals and gasket set To suit horizontal 2 stroke engines in the Yamaha / Minarelli style, with 12mm gudgeon pin. Includes many Keeway (Focus, Matrix), CPI (Hussar, SS50 etc), CMG, Vmoto Monza and all Urban / Urban R4 engines (but see detailed description for fitment notes). We strongly recommend using performance exhaust, carb, variator and intake with this kit to unleash the full potential at high RPM. Sample image shown (actual cylinder kit uses a piston with 10mm gudgeon) 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 70cc so your bike may not be legally registered as a moped in NZ.