The lowest price component in this Rear Brake Master Cylinder parts-list fiche is the Screw-washer 4x14.
Parts such as the Rear Brake Master Cylinder: Pipe,rear Brk., Circlip, M/c., Bolt,flange,6x12, Plate,diaphragm are included in the Gl1500se Goldwing Special Edition 1993 (p) France / Kph Rear Brake Master Cylinder parts fiche.
The most expensive part in this assembly is the M/c Assy,rear.