On this parts fiche the Bearing(14x20x12) is the most specified component.
Some items from this specific schematic: Spacer,rr Cushion Lever Rr, Spacer,rr Cushion Rod, Seal,oil(17x24x3), Seal,rr Cushion Lever Fr Dust.
Of all the components that make up this Rear Cushion Lever the Ring,stopper has the lowest price.