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THIS FRONT SPK. FITS A 17MM OD COUNTERSHAFT THESE ARE FOR 420 CHAIN THESE FIT LIFAN AND ZONGSHEN 120CC ENGINES WITH KICK START ONLY (NO ELE START)

#_OF_TEETH 12T__24J 13T___(17A) 14T___(16i) 15T___(218Y)66mm_OD 16T___(219C)71mm_OD 17T___(219E)75mm_OD 18T__(218W)78.5MM_OD

LIFAN_120CC ZONGSHEN_120CC 12_TO_18_TOOTH DRIVE_SPROCKET 420_CHAIN 120CC/FR/SPK$11.99#_OF_TEETH: