The twenty-eight Gl1500 Goldwing 1990 (l) Germany Front Brake Caliper component parts are all listed in this schematic.
The most reasonably priced component used on the Gl1500 Goldwing 1990 (l) Germany Front Brake Caliper is the Pin,bolt.
Some items from this specific schematic: Dust Seal, Pin Bolt A, Piston, O-ring.