The thirty-nine Gl1500a Goldwing Aspencade 1994 (r) Usa California Rear Case component parts are all listed in this schematic.
The component with the lowest price in the REAR CASE schematic is the Bolt,flange,6x16.
A sample from the products for the Rear Case include: Gasket,rr.case (nas), Spring,rvs Lever, O-ring,21.5x3.2, Clip,hose 21.5.