The lowest price component in this Steering Stem (gsx1100z/d/xd) parts-list fiche is the Cap(od:14.5).
Some items from this specific schematic: Bolt 10x55, Washer, Bracket,headlamp,left, Holder,handlebar.
With all the components that make up the GSX1100 1983 (D) GENERAL EXPORT UNITED KINGDOM (E01 E02) STEERING STEM (GSX1100Z/D/XD) assembly. The O Ring is the most frequently specified with four applications.