As a (general) rule, sport quads are not made for two people. This is why people that want to ride double usually opt for a big fat utility machine. That is not to say that it can't be done.
You can of course ride two people on the TRX700. You can also forget how much power this machine has and the fact that it has IRS which can be unpredictable with the added weight not being distributed correctly during cornering (Body English) and roll it causing you and/or your passenger to either be thrown headlong into a tree, or a rock, or a river, or another rider. Maybe even pinned under the machines 500 lbs.
Not to be snarky, but I have seen too many halfwits try to ride their sport quads with a passenger as they do when riding solo only to see it end badly.
If you are cautious and are aware of your own riding capabilities as well as the machine you are operating you should be fine.
Last edited by Amerikanzero; 06-19-2015 at 06:27 PM.