Rear control arms same JK/JL?

[kkuntz01]

So I’ve been checking manufacturers web sites a little to see who has what out already for the JL. I know it’s still a bit early as everyone is in R&D mode designing and testing which is why I found it interesting that Synergy Mfg. was showing rear control arms and showing them as JK/JL. Now I’m not sure if that is actually true, I’ll need to check with my guy over there to see if that is legit or their web people made an error. In any case thought I’d share in case anyone else had real world experience to validate that.


https://www.synergymfg.com/home.php?cat=4980&sort=price&sort_direction=1&show=all

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[AZCrawl]

I don't think they are the same. I would call them and make sure they test fit and articulated them on a real JL before purchasing.

 

[kkuntz01]

I don't think they are the same. I would call them and make sure they test fit and articulated them on a real JL before purchasing.

I already own a set of the arms, they’re currently on my JK. I was planning on pulling them before I traded the Jeep in to sell, however if there was a chance to reuse them I figured why not. They’d just need a rebuild and freshening up.

 

[AZCrawl]

I already own a set of the arms, they’re currently on my JK. I was planning on pulling them before I traded the Jeep in to sell, however if there was a chance to reuse them I figured why not. They’d just need a rebuild and freshening up.

If it were me, I wouldn't do it. The JL is longer and there were other suspension changes.

 

[kkuntz01]

If it were me, I wouldn't do it. The JL is longer and there were other suspension changes.

I don't have my JL yet, I'm still waiting for it be born.

On a side note just had this confirmed by Synergy.

The stock rear JL control arms are identical to the JK rear control arms. The front JL control arms are different.

Chris
Sales Manager

 

[AZCrawl]

I don't have my JL yet, I'm still waiting for it be born.

On a side note just had this confirmed by Synergy.

Good to know.

 

[OnlyOne]

Synergy has damn good control arms. Top notch. Easy to check. Just measure them.

 

[RedwoodMist]

Has anyone found any evidence to the contrary (aftermarket rear control arms needing to be different for JL than JK for the same lift height) ? I'm upgrading my JLUR with an ARB suspension kit and want to get ARB rear control arms which don't come with the kit. Their catalog shows the JK part number (UCAJKRR and LCAJKRR) for the 2018- JL model - on page 33:

https://view.publitas.com/arb-4x4-a...l-application-catalogue-edition-36/page/32-33

ARB USA gave me a blanket response saying any part with a "JK" is for the JK and has not been tested on a JL. But most aftermarket brands have the same rear arms for both the JK and the JL as mentioned in this thread. Waiting to hear from ARB Australia to see if they have a more convincing answer.

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