On this parts fiche the Stud is the most specified component.
The Gs1000h 1980 (t) (e01 E02 E04 E17 E18 E21 E22 E24 E34) Cylinder consists of seven pieces with the Cylinder being the most expensive.
Some items from this specific schematic: Stud, Pin, Cylinder, O Ring(d:3.05).