The twenty-one Gsx550ef 1986 (g) (e01 E02 E04 E06 E17 E18 E21 E22 E24 E25 E34) Cushion Lever component parts are all listed in this schematic.
A sample from the products for the Cushion Lever include: Bolt(10x52), Spacer, Lever Set,rear Cushion, Nut 12mm.