In this schematic the "Ring,front Fork Piston" is used most often.
Parts such as the Front Fork: Tube,outer Rh, Piston, Washer,fork Oil Seal, Damper Assy,rh are included in the Dr800s 1990 (l) (2 4 15 E16 E17 E18 E21 E22 E24 E25 E34 E39 E53 Front Fork parts fiche.