The most expensive part in this assembly is the Swing Arm Assembly,rear.
This schematic depicts all components used in the Gsx1100 1982 (z) General Export United Kingdom (e01 E02) Rear Swinging Arm (gsx1100ez/ed/exd/esd) partslist.
The most reasonably priced component used on the Gsx1100 1982 (z) General Export United Kingdom (e01 E02) Rear Swinging Arm (gsx1100ez/ed/exd/esd) is the Pin 20x20.