The most reasonably priced component used on the Gs1000h 1980 (t) (e01 E02 E04 E17 E18 E21 E22 E24 E34) Crankcase is the Lock Washer.
A sample from the products for the Crankcase include: Lock Washer, Bolt, Bolt 10x60, O Ring(d:1.9,id:18.8).
The Crankcase assembly is constructed from several parts from which the Crankcase Set is the most expensive.