Some items from this specific schematic: Bearing(20x27x26), Bolt(12x57), Spacer, Front (12x20x30), Rod, Rear Cushion.
The lowest price component in this Cushion Lever (not For U.s. Market) parts-list fiche is the Bout.
The fifteen Gs500f 2005 (k5) Usa (e03) Cushion Lever (not For U.s. Market) component parts are all listed in this schematic.