... 18.80mmDescription of scooter chain sprocket:1. scooter chain sprocket with competitive price 2.durable and high quality 3.stable performance ... coil,startor motor,shock absorber,pole shift,pedal break,meter,muffler,crand case,hub comp,oil pump,rear swining,chain sets ... products sprcialized in the Modle of CG125,AX100,CD100,DY100for honda,jincheng,yamahawe have the ability of supplying most motor parts ...