I have some nerf bars/tree kickers from TFBB. They mount in the lower bolts that is there from the factory. I took it out one time and didn’t get too aggressive with them and they are already stripping out and bolts are backing out on their own. My buddy who has the exact same ones actually tore 3 out of the 4 bolts on his. We are looking for a more secure way to use what we already have to make a more secure fit.

We were thinking about drilling through and putting lock washers and nuts/bolts but we looked under and seems like the tube is blocked on the other underside by another bar T’ing into it.

Pics for reference how they look and mount