The 1/2" bolt that attaches the upper a-arms to the spindle is what is stopping the down travel on my LT kit. Well, its damaging my hi-misalignment spacers on the uni-ball and bending the bolt... sooo, I want to limit the down travel to prevent this. Other options is to put stops in my King shocks, but this is cheaper. Actually, by the looks of the a-arm, it seems to have a spot where a limit strap would mount.... I guess I'm just slow and never put 2 and 2 together sooner... could have saved me some coin and headaches! lol