So we ordered the four link for a nissian king cab and installed it. We have done a few in the past from Fbi and not really had any problems. The truck rode great for 2 weeks, and then all of the sudden... The dam hime joint ripped out the threads on the long bottom bar. He was only doing 30mph so there was not an accident. But the rear end slid over and hit the side of the bed. I have never seen this happen before. The thing was screwed in almost all the way and the jamb nut was tite with locktite blue. Is there any thing you guys think Fbi will do? Has any one else encountered this problem. Let me know cause someone could have been injured badly from this.