This Drum Assy,rr Brk,buff is the most expensive of the items that make up this Rear Hub/brake/chain assembly.
This schematic depicts all components used in the Km100-a6 Km100 1980 Usa Canada / Mph Kph Rear Hub/brake/chain partslist.
The most reasonably priced component used on the Km100-a6 Km100 1980 Usa Canada / Mph Kph Rear Hub/brake/chain is the Nut,8mm.