OEM parts is a great source.
R1150R casing:
http://www.realoem.com/bmw/showparts.do ... g=46&fg=54
Partnumbers:
No. Description Supplement Qty From Up To Part Number Price Notes Photo
02 Left city system case SCHWARZ/15L 1 46542316905 $419.94
02 Right city system case SCHWARZ/21L 1 46542316906 $419.94 +core
02 Left city system case ALPINWEISS 3 1 46547651589 $632.40 +core
02 Right city system case ALPINWEISS 3 1 46547651590 $632.40 +core
03 Bottom part rght without multifunct.box 1
46542317620$165.54 +core
03 Bottom part left without multifunct.box 1
46542317625 $165.54 +core
R1100S casing:
http://www.realoem.com/bmw/showparts.do ... g=46&fg=54
Partnumbers:
No. Description Supplement Qty From Up To Part Number Price Notes Photo
02 System case left without cylinder 32L 1 46542317611 $419.94 +core, See EBA 7669808
02 System case right without cylinder 31L 1 46547660300 $419.94 +core, See EBA 7669808
03 Bottom part left without multifunct.box GID 1
46542317619 $165.54 +core
03 Bottom part rght without multifunct.box 1
46542317620 $165.54 +core
Rightside case is useally the same. You have to look at the bottom part that attaches to your bike. Numbers in green match, in red don't.
Left side needs the cut out for the exhaust (R1100S has seat pipes). So not a 100% match, but maybe you could get the right case for a nice price.
If I remember correcctly cases from R1100R, R850R, R1150R, R1150GS, K1200RS, K1200GT are all matching.