I'm going to get the Teraflex 3" Flex arm system. (1) One system comes with front lower control arms and rear upper control arms. (2) The other comes with upper and lower fronts and upper and lower rears. Do I need the full set of control arms?

 

Save your self a lot of misery and get all the arms. Yes you can get away with rear upper, and front lowers, but just spend the extra dough and get all 8. You will not regret it.

 

Thanks for that!

 

I have had this setup installed for about 8 months. Excellent quality. TF's adjustment settings aren't very accurate after the springs settle. I've had to run the rear uppers all the way in and extend the lowers a full turn to keep the pinion angle correct. The fronts aren't right either (4 degrees caster but still minor driveline rumble) but I'm bumping to 4" springs in a few days so I haven't messed with them. This isn't really their issue, the axle housing really needs to be either cut & rewelded or replaced with one better suited to a lifted suspension.

TF lifts ride WAY high in the rear. With their front & rear bumpers and a Powerplant winch I needed to add a 1" spacer (in addition to their supplied 1/2" spacer) to level it out. Get the 1"spacer when you order your kit and just put it on with the 1/2".

The other issue I had was the stock rear track bar hitting the RR spring. Corrected with RK's rear spring degree wedges and TF's adjustable rear bar. I added a front steering correction kit and track bar bracket. TF uses the stock front track bar bracket with a heavy-duty adjustable track bar. The bar is great, but the angles are too extreme for good handling.

 

Thank for the info.