I've seen the same. Calling them kryptonite ball joints but I've seen no correlation other than the green boots and they seem to pop up together when you search for one. At least for the full size trucks.IIRC, some website that had a lot of lifted truck owners were sourcing these TTX joints & selling them on their site (but not as 'branded' Mevotech). Seemed to be very popular with the ppl who bought them
When I first noticed the difference I got worried about that, having one size wider of a tire on ours but it clears fine. Only way you'd have that is if you just got some really wide tires that weren't tall enough to hit the knuckle.For the upper, with that thicker base, wouldn't it affect those that run a larger tire that are close to it?