The Mopar rock rails are a nice addition and are the only bolt-on rails in existence for the Jeep Commanders. The problem we found with them is that they don't support the weight of the vehicle if you hit them really hard on the rocks (of course we did!) and they get bent up. The braces for the rock rails also hang a little low and sometimes catch on objects under the vehicle. Are they better than having nothing there? Definitely. Would we suggest that Mopar take a look at redesigning them just a little? You bet.