they don't, just need a 135 rear spread..
Rohloff Retrofit (5th chapter) PG 65 of my manual.. long torque arm + the chain tensioner .. Not featured but available...
lets the hub fit frames with wide enough rear dropouts.. even vertical dropout.
External shift box is housed cables all the way to the grip shifter..
..
Last edited by fietsbob; 02-13-18 at 02:32 PM.