... taper QD bushesStock QD BushingsTransmission Componentsstandard sprockets, taper bore sprocketsspecial sprockets, platewheel sprocket,finish bore sprocket, stock bore sprocket,chain ... bushes and racks.Detailed information of SprocketsSpecifications:Rear sprocket: 34T/35T/36T/37T/38T/39T40T/41T/42T ... : 415,420,428,428H,520 etcMain Model:Model of sprocket: AX100, JUPITER Z, JUPITER MX, BIZ100, BIZ125, ...