Of all the components used in this assembly the Absorber Assy,rr Shock is the most expensive.
A sample from the products for the Chain Case - Shock Absorber include: Absorber Assy,rr Shock, Washer(10.5x24x3.2), Washer, Washer (12.5x24x3.2).
In this schematic the "Nut, Lower Lh" is used most often.