GY6 SCOOTER 61MM BIG BORE 170CC PERFORMANCE CYLINDER KIT RACING HI COMP TWPO

GY6 125 & 150CC  61MM OVERSIZE PISTON KIT. MAKES THE 150CC SCOOTER A 170CC SCOOTER. EXCELLENT QUALITY KIT AND RACE PROVEN. INCLUDES PISTON, RINGS, CLIPS, PISTON PIN AND NECESSARY GASKETS.PISTON IS SLIGHTLY DOMED, 54 MM SPACING. DO NEED CRANKCASE BORE TO ACCEPT THIS KIT. TAIWAN QUALITY