If you have their geometry correction brackets you don’t need them from a geometry perspective but adjustable ones are going to be stronger and some offer more clearance than your stock brackets. They will also eliminate the bracket if you have issues with ithem getting hung up off-road . If you don’t have any issues with your current setup your best bang for them buck is probably ordering all new stock arms from somewhere like rock auto. I have never used poly bushings on control arms and I have never heard any of the members here with decades of experience recommend them either.

 

I have the 3"Old Man Emu lift with AEV front drop brackets and just had the front end aligned. My caster with the upper arms in the first hole was right at 5 degrees so pretty much spot on. I did recently put Rancho adjustable arms on because I have 122k on the Jeep and had had a rear control arm bolt loosen...just figured it wouldn't hurt to replace them all around but I did stick with the arms all at stock length.

I would go dual durometer or rubber bushings. Based on past experience the poly would probably be stiff enough that it would make small imperfections in the road much more noticeable.

 

@Turnkyle From a geometry perspective, you don't need them. But the bushings in aftermarket control arms are generally an upgrade over stock. They allow higher misalignment and typically are rebuildable. And as mentioned above, they are a lot stronger.

Another option is buying new replacement stock style control arms... I would buy MOOG from Rockauto and they would be around $30-$35 each which includes new bushings in both ends. That would be like $250 for all 8 or just replace the ones you need...

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Thanks for all the replys. So it sounds like I was correct in my understanding that I don't necessarily need the adjustable arms.

@Pressurized, I did see the Moog ones on rockauto but I decided to pull the trigger on the mammoth adjustables. I couldn't pass them up for the price. Extreme terrain had an open box special on a set for $300. Description said mild scuffing as the reason so I guess we'll see what they consider "mild". Haha

I will still need the upper control arm bushing that mount on the front axle and track bar bushings to refresh everything. Any particular brands or bushing materials recommended? I was originally thinking polyurethane but maybe those aren't as popular as or good as they used to be 🤷‍♂️. It's been quite a few years since I've really been into rebuilding suspensions on lifted vehicles. Back in the day everyone was all about the poly bushings in everything.

 

For the front axle, I would just do the stock style replacements. Rancho RS906 is a great choice.

Poly bushings don't have the misalignment we want for control arms. And they can be rather noisy... There are some poly kits for track bars and that would be a better application as they don't need to have high misalignment.

But the stock style replacements are less than $10 on Rockauto... Might be fun to try the cross-axis bushing on one end, better misalignment and should be more durable too.

Good luck.

 

The biggest reason for adjustable control arms is to restore the axles to there correct locations. As we lift our vehicle the axle move towards the center of the vehicle shortening the wheelbase. Also if you are running double cardon driveshafts you need them to set driveshaft angles correctly.

 

I just received the mammoth control arms and they seem pretty well built at first glance but I can tell you their definition of light scuffing and mine are completely different. They look like they were installed in someone's jeep with a hammer and then removed with said hammer. Additionally, they came in two boxes and one box had barely any packaging in it and the othe had nothing but the arms in it. Not surprisingly, they look like they were beat to shit during transit. Chipping and gouging of the powder coat/epoxy finish and every grease zerk being damaged is more than light scuffing in my book.

I am debating on whether or not to just return them and try and get my money back. It didn't exactly give me warm and fuzzies when I found out they didn't offer a rebuild kit for these either. They are rebuildable but you have to source your own parts to do it. I started a thread in the general jeep discussion to see if anyone has experience with these arms. Probably should have done a bit more research before I pulled the trigger on these.