Actually, I don't intend to take it over huge boulders, mostly bumpy dirt roads and the occasional wash area. I would think the stock underplating on an Off Road should be sufficient for that kind of thing. I collect rocks, but to get to the good ones you need to do some off roading. I would be more concerned about hitting rocks on a rutted road with the underbelly of the X, not climbing boulders etc. lj