I have my F. Premium II and 265/70/16(4" backspacing) Dunlop Mudrovers on order and spidertrax! I am trying to figure out if i need to upgrade my UCA to AL's. I wont be doing any serious offroading. Just driving around out in pastures, dirt roads and small rocks. I really don't feel like blowing another $400 if it isnt completley necessary. But If i do need to upgrade my UCA's i would rather get it done now while i have everything broken down.


Thanks for the help.

I have the same lift and did not upgrade. I asked when I ordered my lift if it was necessary and I was told not really. I am sure others will tell you otherwise, but in my opinion unless you are going to do some real heavy off-roading use the 400 bucks for something else.

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Apatosaurus, Jurassic Park Edition

off roading has NOTHING to do if you need them or not I don't think. I drove it daily and off roaded mine for 70,000 miles and did not have one problem. When I swapped mine out they (the stockers) were still good and in use now on two other KJs.
Now alignment wise its way easier, with the stockers I was maxed out, with the JBAs I still have some leeway to go.

If I had to do it over I would of swapped them out sooner though just for the ability to grease them and also better more true alignments

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

Al J'S mentions the heavy durability of the a-arms for offroading on their website. This maynot be the only or most important reason, I think its number 5 of a list of 6, but I am NOT totally wrong. Really there are plenty of peopel out there running stock arms. If clearance is the issue after your lift instal then the new arms are a must.

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Apatosaurus, Jurassic Park Edition

I didn't have a choice to upgrade mine!

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2004 Black Renegade, manual transmission, Frankenlifted, JBA 4.5 A-arms, 31" Super Swamper M16's on Pro Comp 8128 wheels, MagnaFlow exhaust, Volant cold air intake, and clear front signals.

Yikes

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2008 KK Liberty Sport NIGHT OPS EDITION + GILLS
OEM & Custom Skids - Factory Tow Package - Rock Lizard Skink Super Sliders
Prototype JBA 4 Inch Lift - JBA UCA's - Flowmaster Super 44 OR - Whacked Resonator
Jet Stage 2 - RL Gecko Basket Rack - Custom Winch Bumper - Recon 10.5K Winch

The severe angle and possible contact with the spring caused the boot to rip, and eventually caused the ball joint to look like this!



Either keep a close eye on your stockers, or upgrade to the JBA 4.5's and not have to worry about your wheels folding over!

I bought my Jeep used, and the original/previous owner said he installed the lift soon after he bought it. Ball joint failed at 60,000 miles

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2004 Black Renegade, manual transmission, Frankenlifted, JBA 4.5 A-arms, 31" Super Swamper M16's on Pro Comp 8128 wheels, MagnaFlow exhaust, Volant cold air intake, and clear front signals.