The JKS fixed length front lower control arms are for those of you that have a 2007 and
up JK that has a lift kit on it and are looking for a longer set of control arms in order
to fix your caster and your pinion angle.
Of course, these are going to be fixed lengths, so you're not going to get all the adjustability
that you would with an adjustable sets of control arms, I think that's pretty self-explanatory.
You're also not going to get quite as much articulation out of a set of control arms
like this because these have rubber bushings on both ends instead of having a spherical
style and joint on one or on both ends.
But the benefit to something like this is that it's going to be a little bit less expensive
than those adjustable and those arms that have some more articulation.
So, if you're looking to save a little bit of money and you don't need those additional
benefits, then these are going to be an excellent option for you.
This is going to be something that installs pretty easily onto your Jeep, I'm gonna give
it a one out of three wrenches, probably about an hour maybe a little bit more to get both
sides installed, but we'll talk a little bit more about that in just a second.
In general, JKS makes a very high-quality product, and I think that this absolutely
goes right in line with everything else they build.
Very, very high quality, very, very strong.
Those lower control arms are the control arms that are going to get beat up when you're
on the trail.
So you do want something that's going to be big, beefy, and strong.
In the ends of the control arms you want something that again is going to be strong and hold
up.
You don't want these bushings wearing out on you and starting to make noise or cause
a wobble.
And this is going to be something that you can install on your jeep and is going to last
a very long time, and I think it's very affordably priced for the quality that you're gonna get.
These are going to be two-inch round tubing that is quarter-inch wall thickness, and this
is DOM or drawn over mandrel tubing which is very, very strong tubing.
This is what they make roll cages out of, this stuff is very, very solid.
It is going to, of course, be covered with this black powdered coat finish.
If you spend a lot of time on the rocks, I don't care how good the finish is, eventually
you're going to rub a little bit right off the bottom, but at least in the beginning
this is going to keep these protected from any rust and corrosion and also keep them
looking pretty good as well.
So these are going to be a total of three-eighths inch longer than stock, and the reason for
that is that when you lift your Jeep you're rolling both of your axles so that the pinion
is going to be a little bit higher.
Now what that can cause in some more extreme situations is a vibration because of your
driveshaft angles and the U-joints in your driveshafts.
But specifically, here we're talking about upfront.
You're also affecting your caster angle.
And the caster angle is what affects how the steering wheel re-centers itself while you're
driving down the road.
So, when you make it turn, you start accelerating, you can pretty much just let your hand off
the wheel and it will turn back and re-center your Jeep again, that's because of the caster
angle, among other things, but the caster angle of that front axle.
So when you roll the axle due to a lift, you're eliminating some of that caster and you can
actually get what equates to a flighty feeling when you're driving down the highway because
the wheel just isn't re-centering itself like it should.
So, something like this, a longer lower control arm will unroll that front axle, giving you
a little bit of a more stock caster angle.
So that's what this is really about, that's the idea behind going with the longer set
of control arms.
Now, if you really wanna be able to dial in that caster angle, you're gonna wanna go adjustable.
If you're somebody who does a ton of off-roading, big rocks, you want a ton of articulation,
these rubber joints are very strong.
They're gonna hold up very, very well for you but they're not going to give you as much
twist as a spherical joint would.
So, again, if you want those other options, if you are going to take advantage of those
other features and you have a higher budget, those options are out there, from JKS and
from other brands.
If you don't need all that and you want to save some money, I think this is a very nice
way to go.
A pair of these control arms comes in at $225.
As I said before, if you're gonna go with an adjustable set or a set with spherical
ends, you can expect to pay more.
For a fixed set, this is probably going to mean medium, medium-high on the price range.
You can probably find a set that's less expensive but they're not going to be quarter inch DOM,
they're not going to have the same Clevite rubber bushings in the end here.
Overall they're just not going to have the same build quality.
I think that this is going to be a very well built piece for the price.
Now we're going to have a member of the install team to show you how these get bolted onto
your JK.
So now that we have our Jeep in the air the first step is going to be to support the axle
evenly.
We're gonna compress the suspensions so we're roughly about stock ride height, then we're
gonna remove one of our control arms.
So we're gonna begin by removing our passenger side lower control arm.
We're gonna use a 21-millimeter wrench and a 21-millimeter socket.
So now we're ready to install our new JKS control arm.
We want the curve to face inward at the bottom, so we're gonna get this bottom bolt started
first and then we'll get the top in.
So now that we have our lower bolt in, we're ready to install the top bolt.
Since these control arms are slightly longer we're gonna need to shift the axle forward.
We're going to use a pry bar in here to pry that forward and get that bolted.
So now we're ready to do our other side.
We're gonna do the same thing.
Now that the stock one's out, we're ready to install our new control arm.
Same thing goes, the bend want's to go at the bottom towards the inside.
So we're gonna get the bottom started first.
And since we already did the other side, this one should line right up.
So now that we have both sides in, you're ready to tighten everything up.
So now that everything is tightened up, you're gonna wanna torque these to factory specs,
then you can remove the pole jacks.
However, that wraps up our review and install.
For more videos like this, check us out at extremeterrain.com.
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