On this parts fiche the Bush is the most specified component.
The Pin 20x20 is the cheapest item from this partsfiche.
Parts such as the Footrest (model Z): Bolt(10x50), Footrest Assembly,pillion, Pin, Bar,front Footrest,left are included in the Gs1100g 1983 (d) Usa (e03) Footrest (model Z) parts fiche.