Originally Posted by thewagon
If you don't want it to "bow" when you stand on it, then get the Mopar OEM Nerf bars in black. They come in black or chrome.
Note the 3 mounting brackets on each side...that's your insurance
This is how it looked after I took them out of the package (bought online, SOOOOO much cheaper)
The Mopar bars mount only to the rocker panel (I believe). I would stay away from Rocker mounted bars unless they also tie back to the frame rail as well. You don't want them to bend when you use them but you also don't want the body to sustain damage if you ever get high-centered on anything.
I have a set of Raptor 4" oval step bars. They mount to both the frame and the rockers. I'm nowhere near 300# but they seem to be pretty steady to me. They've been on (2) trucks now (2009 CC and my new 2011 CC) without any problems.