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GY6 SCOOTER 61 MM BIG BORE COMPLETE 170CC PERFORMANCE CYLINDER KIT RACING Hi CO
GY6 125 & 150CC 61MM OVERSIZE PISTON KIT. MAKES THE 150CC SCOOTER A 170CC SCOOTER.
GREAT QUALITY KIT AND RACE PROVEN. INCLUDES PISTON, RINGS, CLIPS, PISTON PIN, CYLINDER HEAD, CAM AND NECESSARY GASKETS.
CRANKCASE BORE TO ALLOW THE KIT TO FIT.