Bushings are the main components that wear over time. Now it all depends on what lift you have as to what your bushings will be. Some are rubber, some are poly, some are rebuildable JJ's and other are heims.
These are found in both ends of of Lower and Rear Upper Control Arms and Frame side of Front Uppers. The front axle will have bushings pressed in for the Upper Control arms.
Front and rear track bars have the same thing.. both ends will have some sort of bushing, depending on the manufacturer....
Sway bar end links can be an issue if the bushings are worn...
Those are the main areas of concern
~Todd~ 2004 X 4.0 5 speed---SOLD
4" Lift, 4.56's, 33" Duratracs on M/T Classics
RR SYE, Tatton CV, MML, BL, TT, Dynomax Exhaust
Hella Lighting: Driving, Fogs and H4 E-Codes
... and NEVER will be