does anyone know if the 4inch IFS kits start to sag in the rear? i have the pro comp stage 2 one and just wondering if i have anything to look forward to:rolleyes:

 

No spring is sag proof. Some just sag faster than others.

 

Mine are sagging, but like jx94148 said, no spring is sag proof. It also depends on how much you carry in the back. I had a canopy with a camping bed thing in the back and it started to sag quite a bit (like 2.5 inches!!!). I'm probably going to get some skyjacker springs for the rear. From what I have heard, these are some good springs that bolt right up to your toy.