Upper rear control arms

[dylan_n_00]

Are these needed or is it just pretty? I'm gonna be installing a 3" lift and doing the lower arms as well

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[rochmpr]

No, they are not needed. The benefit of these is when you go long travel in the rear. The heim joint allows move movement with less binding.

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[dylan_n_00]

Awesome. Thank you


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[wfo9]

No, they are not needed. The benefit of these is when you go long travel in the rear. The heim joint allows move movement with less binding.

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Actually... they allow you to get your pinion angle back to factory spec after a lift. Also if you want to move the axle forward or something with adjustable LCAs.. Not required though. If you get a vibration in the rear end from the U-joint.. this can fix it and reduce a little wear on that joint. I've never ran adjustable myself.. but can see a very small benefit. If you notice your rig smooth out a bit with a load... You get the idea of what they provide.. but pinion angle is always changing with load anyway. Someone also makes non adjustable that are already the right length for a lift to get the pinion angle back to spec unloaded.

 

[rochmpr]

Actually... they allow you to get your pinion angle back to factory spec after a lift. Also if you want to move the axle forward or something with adjustable LCAs.. Not required though. If you get a vibration in the rear end from the U-joint.. this can fix it and reduce a little wear on that joint. I've never ran adjustable myself.. but can see a very small benefit. If you notice your rig smooth out a bit with a load... You get the idea of what they provide.. but pinion angle is always changing with load anyway. Someone also makes non adjustable that are already the right length for a lift to get the pinion angle back to spec unloaded.

As WFO stated, there are some advantages, but, since I was on my phone in an airport heading on vacation, I wasn't going to go in depth, but there are plenty of knowledgeable people here to help out.