The most reasonably priced component used on the St1100 Paneuropean 2000 (y) Austria Crankcase is the Bolt Flang 6x12.
The twenty-one St1100 Paneuropean 2000 (y) Austria Crankcase component parts are all listed in this schematic.
Some items from this specific schematic: O-ring,4.8x1.9, Sw.assy Oil Press, Dowel Pin,10x16, Crank Case Set.