The most expensive part in this assembly is the Caliper Assy (right).
Some items from this specific schematic: Disc Brake Assy, Shim, Caliper, Support, Pad, Piston Assy, Caliper.
twenty-eight components are shown in this Xp500 2004 5vu1 Italy 1c5vu-300e2 Front Brake Caliper exploded diagram.