We went away from enclosed trailers for ATV's due to the size required to pull just 3. The Razrs will be even worse unless you're only pulling one. You will end up with a very large trailer, that is very difficult to load even 3 machines and even one Razr. And the weight...width...height...heck...might at well pull a travel trailer. At the time we had only one guy in the group with an Burb that could haul our trailer, and it was not good. We soon dumped that and I bought a 3 place Triton that I have towed with a Honda minivan...now a Pilot...on nuerous occasions and we never looked back.