i have 1 1/4" heims on everything, uppers and lowers, 3/8" wall tubing on all of the links, i would guess at jumping it 60+ times just this weekend... seems to be no fatigue except in the upper kingpin bushings... i am looking into replacing those w/ something else....P said:Jimmy, what ends are you using upper and lowers, link material ? How many times estimated do you think you've aired your rig out and have you noticed any slop or damage to any of the ends. Just curious on how hard parts are taking the abuse from jumping at speed like that. Cool ****... Im to ***** to do that to my rig laughing1