Originally Posted by fietsbob

+1) Bike Fridays Pocket Llama is their off road, higher BB , model .. IGH will need to have a Chain tension er,
but it will be higher off the ground than a long cage RD for MTB like drivetrains..

I have a disc Rohloff Llama.

but you may find the 20" 406 wheel even with BMX tires, less than great on rocky single track.