I am looking to lift my Jeep (2014 JKU) this summer and have decided on going with Rock Krawler. They have a good reputation on these forums and I have heard great reviews about them from my buddies who I wheel with.

I have decided to go with 3.5" because I am going to be putting 37's on when my current ones die, but I don't know which system to get from Rock Krawler.

The X Factor has replacement upper control arms while the Flex doesn't

Are replacing the upper control arms important? Any thoughts in general?

 

One set of arms lets you tilt the housing to set the caster/pinion. The second set allows for fine tuning, as well as repositioning the housing forward/backward in the wheel well. You will be ok with one set of arms at each end, but more adjustability isn't a bad thing.

One note that you might want to look into further is that (if I read previous posts correctly) the x-factor arms are longer, with the intention of extending the wheelbase. When you move the wheelbase, you have other items to think about. Component clearances, bumpstop pad alignment, whatever. Again, I have not really looked into this, so take it as just something that may be worth getting more info on...

 

I share my experience with what he is referring to with the xfactor kit. I installed properly and did what they recommend in the instructions with using the wedges and moving sway links back. I had no issues whatsoever with my kit. Others have had same success and others have had issues with trackbar rubbing on things and sway links hitting axle and bending or coils bowing. I'm sure some of those issues were due to improper installation but some might now have been.

 

I live in Houston (mud, sand, and maybe a hill... somewhere are what we have). Would I need the extra fine tuning and adjustment of housing in the wheel well?


DunnyBunny: How much have you put the x-factor through?

 

Lol. Not a whole lot of anything. Lol. Haven't had much chance to offroad but I got it at a steal and only reason I got it, got king shocks with it and thats what I really wanted even though on didn't keep them. I just tool off the arms though and trying something different for a while so they are uo for sale right now.

I will be starting to go to Superlift ORV park in Hot Springs, AR, Barnwell in Gilmer, TX and Hidden Falls near Austin,TX.

 

My 2.5" xfactor on MetalCloak trailer and an RTI ramp.

 

Were you hitting your bumpstops in the rear?

 

Need? No.
Want?

It's personal opinion. Depending on vehicle weight, you could be in the 4-4.5" range with those coils. The added adjustability given by the second set of arms might be real nice to have. But not a 'must have'.

 

Yes I was I can cut about 1" off. Maybe 1.5". They said I have a ton of room in rear which is what your noticing I'm assuming. Lol

 

Ah need vs want LOL I went with the 3.5 X Factor, mostly because I wanted it and I didn't want to regret it. Plus I like the look or the axle pushed back.

No issues so far, running 35s