That entire piece is broken though as per the original post. That small crack is as a result of the main break. I would imagine this crack isn't going to be an issue once the component is replaced. On a side note, who fitted the RSB and how were the brackets attached (eg. rattle gun)? The ones UR used to supply were prett beefy and I would t imagine them to budge much of tightened up to the factory mounts. In that case, they could have been applying extra stress to the mounting points. I installed the RSB and i just used a normal ratchet, If that is the case and the bracket isn't a perfect fit and could have helped cause the problem, what do you recommend? source an aftermarket bracket? Cheers