Some items from this specific schematic: Nut 12mm, Bolt(12x115), Bolt(10x58), Lever Set,rear Cushion.
This schematic depicts all components used in the Gsxr1100w 1998 (w) Usa (e03) Rear Cushion Lever (model S/t/v/w) partslist.
On this parts fiche the Bearing(20x27x23.5) is the most specified component.