On this parts fiche the Washer(12.6x24x1.9) is the most specified component.
This part-list fiche shows all the components that make up the Gsf1200s 1996 (t) (e02 E04 E17 E18 E22 E24 E25 E34) Footrest (model V/w/x) .
The Ball is the cheapest item from this partsfiche.