Forum bmwbike.com

I understand that it's possible to put /5 brakes inside the /2 drum castings. Is there really
any value in doing this? Has anyone done it? How was it done?

The / 5 shoe was supposed to be of an advanced material, developed by Porsche.
This allowed for the shoe to be narrower. The shoe drops in just like the /2 shoe
.it is about 10 mm narrower. I think modern linings on /2 shoes is a better way to stop.