Parts such as the Front Fork Front Fender: Thread,head,top,, Race,bottom Cone, Dust-seal, Bolt-washer,6x20 are included in the Z50r 1980 (a) Usa Front Fork Front Fender parts fiche.
On this parts fiche the Ball,steel.,6 is the most specified component.
The lowest price component in this Front Fork Front Fender parts-list fiche is the Ball,steel.,6.