1.With heat treatment 2.Long life duration The sprocket features ... , CD70, CD100, CD125, CG125, GS125,etc.2. Model For Suzuki:A50, A80, A100, AX100, AX115, C70, C90,CN125 ... FR100, GT50, GP100, GP125, GN125, etc.3. Sprocket Model For Yamaha:AG100, CRYPON, DX100, DT125, FS80, GT50, JUPITER Z, ... MX, RD50, RS100, RX100, RXK, etc.4. Model For Kawasaki: DAELIM LIBERTY, ENG DAELIM, ALTINO 100, GTO125, KAZE ...