The component with the lowest price in the STEERING schematic is the Ball.
Parts such as the Steering: Washer Plate 135222430000, Crown, Handle, Handlebar Shimmy Damper Assy, Seal, Dust are included in the Rd350 1973 Usa Steering parts fiche.
The Rd350 1973 Usa Steering consists of twenty-eight pieces with the Handlebar Shimmy Damper Assy being the most expensive.