What I can remember after decades of working with BMW motorcycles
Flanders accessories
Flanders was the BMW importer for the west coast until Butler and Smith took over. I got my dealership from Flanders, and Earl Flanders ran an honest organization.
This catalog shows the many accessories that they sold. Probably best known is the handlebar fairing, so that is why it is in this section.
You will see the large variety of quality products that were carried by Flanders.