The Rear Caliper (gsf1200t/v/w/x/st/sv/sw/sx) assembly is constructed from several parts from which the Caliper Assembly,rear is the most expensive.
The Bolt is the lowest priced item on this Rear Caliper (gsf1200t/v/w/x/st/sv/sw/sx) schematic.
On this parts fiche the Bolt,housing is the most specified component.