I would think that you would need to have separate suspensions for both rear wheels. If they were on the same swingarm, when the front rear wheel would hit a bump it would lift the back rear wheel at the same time, and then the back rear wheel would spin when it hit again only to lift the front rear wheel which would also spin when it came back down. So it could work but each wheel would need independent suspension, if I am thinking it out clearly. Of course if the surface was smooth enough it might work on the same swingarm.