The Screw-washer 4x14 is the cheapest item from this partsfiche.
The Rear Brake Master Cylinder is made up of components including this M/c Assy,rear which is the most expensive.
This schematic depicts all components used in the Gl1500a Goldwing Aspencade 1991 (m) Norway Belgium / Kph Rear Brake Master Cylinder partslist.