The most expensive part in this assembly is the Cushion Assy Rr.
Parts such as the F-28 Rear Cushion: O-ring,5.8x1.9, Circlip,in.66, Boot,rr.cushion, Connector are included in the Gl1200a Goldwing Aspencade 1984 (e) F-28 Rear Cushion parts fiche.
The Nut,hex.14mm is the cheapest item from this partsfiche.