Just to clarify, those are not Rally Raid's wheels - not sure what they are to be honest - someone more nerdy than I ought to be be able to tell what bike they are off from the design of the cush/sprocket carrier perhaps? - as Glencoeman suggests, they might be from an earlier [single cylinder] BMW 650GS with the rear flipped 180°? - although do consider that if they are from an older model then you're probably going to have trouble sourcing them.
For info. Rally Raid offer a dedicated heavy-duty set of spoked wheels designed to be a direct replacement and accept all the brake, ABS and cush-drive components from the stock wheels (and use the same size bearings and seals too) - brand new and warrantied (and with a tubeless option that has a 4 year warranty).
Last edited by JMo; 04-17-2018 at 10:20 AM.