The Screw,flat,4x12 is the lowest priced item on this Fr. Brake Master Cylinder schematic.
The most expensive part in this assembly is the Sub Assy,fr M/c.
Parts such as the Fr. Brake Master Cylinder: Ring, Bolt,flange,6x22, Spring,brk.lever, Washer,oil Bolt are included in the Crf450x 2006 (6) European Direct Sales Fr. Brake Master Cylinder parts fiche.