Seller notes

NCY HIGH PERFORMANCE GEAR SET (17*41) THIS GEAR IS ALREADY PRESSED AND READY TO INSTALL IN YOUR BIKE FOR CHINESE SCOOTERS WITH 50CC QMB139 MOTORS NUMBER OF SPLINES: 19INNER DIAMETER (SPLINES PEAK TO PEAK): 18MMTHICKNESS: 15.5MM RATIO 2.41NCY QMB139 UPGEAR KIT FOR YOUR 50CC 4-STROKES IS FINALLY HERE! THIS KIT IS MADE SPECIFICALLY FOR 88CC BIG BORED ENGINES AND INCREASES YOUR GEAR RATIO BY 30%. THIS IS THE MOTHER OF ALL UPGEARS FOR THE 50CC QMB139 SCOOTS. ONLY EFFECTIVE IF YOU HAVE A FULL BLOWN 88...

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