The most reasonably priced component used on the Gl1500c Valkyrie 2000 (y) Germany Steering Stem is the Rivet,4.1mm.
Some items from this specific schematic: Washer, 45mm, Lock Comp.,handle, Washer, R/brg Tap N/com.
The Steering Stem is made up of components including this Stem Sub Assy,str which is the most expensive.