motorcycle engine valve.1.suitable for CG 125 ,WAVE,GY6, AX100, CD70,YBR, ... iron-base alloyHardness is =85-110 HBC ,density is =6.5g/cm3Strong resistance of abrasionmotorcycle engine valve. IN/EX vavle suitable for ... other Moto engine parts : connecting rod . weight pin , bearing . valve , engine valve For Brail , Argentina , and other South America MotocycleModel: Motorcycle sprocket ...