Previously, I replaced the swing arm bearings and you can read about how I did that here:
Now I install the swing arm in the frame and then install the rear drive on the end of the drive shaft side of the swing arm. I show how I align the swing arm in the frame to reduce stress on the drive shaft when I install it. The rear drive mounts easily to the flange on the right side of the swing arm with four 12-sided nuts.
Here is a link to the procedure:
And here is a video summarizing how I did the work.
VIDEO: 1983 BMW R100RS Install Swing Arm & Rear Drive
I had the swing arm powder coated and cleaned up and I refinished the rear drive that had been sprayed black with rattle can paint.
Rear Swing Arm Removed
Powder Coated Swing Arm
Right, Rear Drive, Top
Right, Rear Drive, Rear
Refinished Rear Drive
Refinished Rear Drive
Here is the final product.
Swing Arm And Rear Drive Installed