The Pin is the lowest priced item on this Rear Master Cylinder schematic.
The Rear Master Cylinder assembly is constructed from several parts from which the Cylinder Assy,rr Master is the most expensive.
The Washer(10x15x1.5) is the most widely applied product in the GSX1300R HAYABUSA 2009 (K9) USA (E03) REAR MASTER CYLINDER ( four times ).