Top box Which one fits?

[keith22]

I have recently got a BMW GS luggage rack/top box mount and now have a RT system top box (probably a r1100rt)

They do not remotely mount on each other. Any suggestions which mounts fit a GS and which top boxes fit a gs rack?

Keith

 

[Colt]

keith ,sounds like you have the rack for gs/k series topbox.
the 33lt topbox fits,(as in my pic in show us yours).
the 35lt rt/rs topbox needs a different after market rack to fit on a GS.