This is my question/concern as well. Their doesn't seem to be a lot of instances of these failing so IDK. I was wondering if the bushing seized on one? But to have both go seems odd. I don't think I run any bigger/heavier than anyone else. Actually I'm pretty sure it's the opposite. I also don't think I push my truck too awful hard but maybe I'm wrong. I wonder if when I bent my rear lower control arm it damaged the weld on that side. It was quite bent, probably an inch or so. I'll get a better look at them when I take them out.

I did notice the ends of both arms aren't rusted so they must have sheared off relatively close time wise.

As far as the OEM goes it would definitely be cheaper to go that route and after all they did last 120,000 miles. However, I did notice a big difference when I upgraded the bushings on all the rear links. Much smoother travel.

I'm leaning towards the Overland Custom Design arms. Look very solid. Might even change my lower arms to those too.