The component with the lowest price in the REAR BRAKE CALIPER schematic is the Bolt, Flange(4my).
Some items from this specific schematic: Caliper Assy, Rear 2, Support, Pad, Disc, Rear Brake 2, Breed Screw Kit.
seventeen components are shown in this Wr250f 2002 5ph6 Portugal 1a5ph-100e2 Rear Brake Caliper exploded diagram.