The most reasonably priced component used on the Gsx1100ef 1984 (e) (01 02 04 06 15 16 17 18 21 22 24 25 26 34 39 Front Calipers is the Clip,pad Pin.
On this parts fiche the Bolt,caliper is the most specified component.
The sixteen Gsx1100ef 1984 (e) (01 02 04 06 15 16 17 18 21 22 24 25 26 34 39 Front Calipers component parts are all listed in this schematic.