Some items from this specific schematic: Oil,36x66x10.5, Refl,rr.reflex, Reflector,rr.refl, O Ring,5.8x1.9.
Of all the components that make up this Rear Shock Absorber the Washer,plain,14mm has the lowest price.
On this parts fiche the O-ring,5.8x1.9 is the most specified component.