What keeps the control arms from twisting and bending? - Jeep Wrangler Forum
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Old 10-08-2014, 07:10 PM
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What keeps the control arms from twisting and bending?

I detached the front sway bar for the 1st time and parked it on a small bank to look at the amount of flex in the front. My question is what keeps the control arms from twisting? They are stock. So they are fixed to the axle and fixed to the frame. It looks like there is a lot of force on these brackets and arms. The bushings do not look like they are meant to twist like a heim-end. As the axle moves up and down this bracket on the axle will change angle with the axle, but the other end is attached to the frame, which is not flexing. So do I need different control arms to run with the sway bar detached?

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Old 10-08-2014, 07:12 PM   #2
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There is some flex in the factory bushings. I've always assumed that the stock arms are designed to twist a certain amount.

Of course more expensive aftermarket control arms will allow for better articulation.

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Old 10-08-2014, 07:20 PM   #3
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The stock control arms are designed the way they are so they will flex as the suspension flexes within the stock parameters. They are not really made to flex to extremes as you can see by the pictures below. The only other control arms worth using are arms with Johnny joints in the ends (Like Savvy Currie) or the Duroflex joints (Metalcloak). Most of the control arms that come with inexpensive lifts use a poly bushing in the end joints and because they use a rigid tube, they put all that force on the control arm mount trying to twist the end out of it. All that does is break mounts.
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Old 10-08-2014, 07:22 PM   #4
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What's kind of cool about the factory links is that they are designed to twist, Basically a torsion set up. Stock arms probably out flex, and put less stress on your control arm brackets than a lot of double poly, or double clevite solid arms. Keep in mind, when we're talking about articulation, if you're able to fully extend your shock, and the other side is on the bump stop, that's all you get. It's rarely the control arms, stock or otherwise that are the limiting factor in regards to articulation.
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Old 10-08-2014, 07:35 PM
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Thanks I figured it was designed to twist, but wasn't sure Jeep calculated into the equation that the first thing a jeep owner would do is disconnect the sway bar.
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