Parts such as the Front Brake Caliper (vt1100c2): Retainer, Cap,bleeder, Seal Set,piston, Caliper Sub Assy, are included in the Vt1100c2 Shadow 1998 (w) Germany / Whi Front Brake Caliper (vt1100c2) parts fiche.
In this schematic the "Seal Set,piston" is used most often.
The most expensive part in this assembly is the Caliper Sub Assy,.