... Material 3.Excellent Surface 4.Customizable 5.OEM offer spare part and sprocket set 420 motor suzuki powerful and ... requirements wear resisting, no violent impact, can chose 45 #steel -- sprocket -- Yamaha:AG100,DT100,DT125,DX100,FS80,GT50,GT80 ... 428H 520 520H 525 530 530H 630Material A3steel,1045#steel,16MnHeat treatmenthigh-frequency hardening,carburizationSurface treatmentSand plating,zinc ...