One caliper left as of 1/13/13
When calling for parts I just look for a 1993 K1100RS, as that's a bike I had and uses the correct pad. BMW may spec out different pads for say the R12C or R1100GS.
Try Galfer green FD198 G1651, Happy Trails list them. the p/n I gave earlier was what was on my last set.
Another reason I like the Galfer pads is they have spring clips (see pict below) for the brake pin. Some other pads don't.