The Rear Swinging Arm is made up of components including this Swingingarm Assy,rr which is the most expensive.
Parts such as the Rear Swinging Arm: Pin 20x20, Case,chain, Screw, Nut are included in the Ds80 2000 (y) Usa Canada (e03 E28) Rear Swinging Arm parts fiche.
With two applications this Bush is the most specified part.