You will need the black steel mounting system in order to mount the Monokey side cases on your BMW R1300GS.
Mounting Instructions
Compatible side cases: TRK33N, TRK46N / TRK33B, TRK46B
Not compatible with the side cases Dolomiti & Trekker Outback!
You can carry all your tools, extra bulbs, spare and wear...
Tail bag X-Line (1 piece), volume of 40 litres
...
Small, smart bag for the double-butted handlebars of the BMW...