I have a six inch lift on my 85 4Runner and when I have 2 or sometimes 1 person in the back seat my shackles "fold" down, in order to fix them I have to lift up on the back bumper and they come back up. I want to get new shackles anyway, but is it the bushings causing the problem or the shackles?

Thank you,

 

i have that same problem on my 85 4runner, and i have been looking for an answer. but if you find and solution. post it. good luck fixing it.