The sub assemblies and components that make up this Steering include this Handlebar Shimmy Damper Assy, the most expensive part.
Parts such as the Steering: Ybs67-8 Washer, Spring, Nut, Crown, Bolt (648), Ball are included in the Dt2 1972 1973 Usa Steering parts fiche.
The Ball is the lowest priced item on this Steering schematic.