The most reasonably priced component used on the Ke125-a8 Ke125 1981 Usa Canada Taillight ('80-'81 A7/a8) is the Washer-plain,6mm.
Of all the components used in this assembly the Tail Lamp is the most expensive.
The Kawasaki TAILLIGHT ('80-'81 A7/A8) has twenty-seven products enlisted in the schematic.