Stage 6 Sport Pro Mk II 70cc kit Yamaha

Ok for racing! The Mark II is here, with further improvement to porting, head and piston for even more power! This high quality German designed Stage 6 brand cylinder is designed with porting for big torque yet ability to rev on too. Great racing capability. There are not many cylinders around that can hang with this Stage 6 Pro kit off the line and out of corners. Increases cylinder capacity to 70cc. Features: Alloy body for fast heat dissipation and reduced chance of seizure at high rpm and load Super hard nicasil bore lining for durability Advanced port map for high end power Custom head with computer designed squish area and bowl shape Light weight and nice appearance Recommended for racing use. Good durability for street use too. To suit: Yamaha Jog (all horizontal 2 stroke including 3KJ, 3YJ, 3YK, CV50 etc) Yamaha Vino (all 2 stroke) Yamaha Axis (all 2 stroke 50cc) Adly Silver Fox SF-50 Gatecrasher GTC-50 Adly GTA-50 Roadtracer RT-50 Benelli Pepe (with 10mm gudgeon), Quattronove 50cc Many clones using the Minarelli engine including some Aprilia, Vmoto, PGO etc The hard chrome/nikasil bore lining means rebores are not possible. 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 increases your engine size to approx 70cc so your bike may not be registered as a moped in NZ.