The present disclosure includes hitch-mounted carriers, including portable bicycle racks. One carrier may include front tire tray assembly; hook arm assembly; pivot assembly; hitch shank ball cam assembly; rear tire tray assembly; and a bike docking assembly. The pivot assembly allowing for adjustment between: storage, trunk access, and use configurations. The bike carrier having first and second wheel supporting tray assemblies for supporting wheels of a loaded bicycle. A hook arm assembly may be pivotally arranged relative to lock at least one wheel and ratchet clamped to at least one wheel. The hook arm assembly may also be configured to extend and retract and is frictionally locked into position. The bike carrier may include a docking assembly having inner and outer clamps configured to the hold a bike into position such that mechanical work may be accomplished at an elevated height.