Today I bought a new pair of of brake shoes that are made to fit BMW models
R100GS & PD | R100R & Mystic | 09/1989 - 1996
R80GS & PD | R80R & Mystic | 09/1989 - 1996, however they fit perfectly on my 1951 R67 ! the only alteration I had to make was to remove the steel covers on the flat edge of each shoe to allow a deeper drop into the cable operated flat surface cam. The shoes are slightly wider than original but fit fine . Thought this info might be of interest.
Hi Micha, I bought mine from a uk based shop close to my home called : Moto Bins u.k the code number is code : 24870. . if you want to get a pair, Ebay sells them and any bmw motorcycle dealerships will supply ,just quote the model and year of any of the bikes mentioned in my previous message should be enough .