On this parts fiche the Bolt-flanged,8x20 is the most specified component.
Parts such as the Master Cylinder: Packing (nas), Bolt,stop, Pin, Ring-snap are included in the Kaf400-dbf Mule610 2011 Usa / 4x4 Xc Master Cylinder parts fiche.
The Master Cylinder assembly is constructed from several parts from which the Cylinder-assy-master is the most expensive.