twenty-seven components are shown in this Cb600f Hornet 2003 (3) European Direct Sales Rear Brake Master Cylinder exploded diagram.
Some items from this specific schematic: Sub Assy,rear M/c, Clamper,master Cy, Cup Comp.,oil (ni, Nut,hex.,8mm.
Of all the components used in this assembly the Sub Assy,rear M/c is the most expensive.