The most reasonably priced component used on the Gn400t 1981 (x) Usa (e03) Chain Case - Shock Absorber is the Washer (6.5x20x1.2).
Of all the components used in this assembly the Absorber Assembly,rear Shock is the most expensive.
The Suzuki CHAIN CASE - SHOCK ABSORBER has fifteen products enlisted in the schematic.