Most people that get into their car, fire up the ignition, and put it in drive may not understand all the moving parts required to get you moving—one of those vital components in your vehicle’s control arms. Two types of control arms share similarities, but what are the differences between upper and lower control arms?

Upper Control Arms

Heavy-duty vehicles like SUVs and trucks benefit from factory-installed upper control arms. However, manufacturers have cost-cutting at the forefront of their minds, considering they use inexpensive sheet metal for mass production. Hence, aftermarket upper control arms (UCA) are the best option for those wanting a suspension lift. While the lift’s primary purpose is for better wheel travel, it includes other benefits.

Numerous excellent suspension systems for off-road vehicles contain a control arm that increases the component’s durability, provides a larger selection of ball joint alternatives, and is more compatible with aftermarket coilovers. Additionally, you’ll have superior wheel alignment compared to other cars that employ spacers. You should notice how your vehicle operates better with a newly added upper control arm because virtually any addition surpasses the manufactured one.

Lower Control Arms

A lower control arm is an essential component of the vehicle’s suspension system, as It offers a sturdy link between the suspension system and the wheel. The wheel alignment and suspension system will be off-kilter without a lower control arm.

The lower control arm helps your vehicle absorb the impact of bumps in the roads like potholes. But if that pothole is large enough or another massive object in the road breaks the control arm, you’ll notice that your alignment is out of whack, and you’ll have trouble steering.

Differences Between the Two Arms

Generally, the upper and lower control arm seems synonymous with each other. They serve similar purposes of providing stability and control but are not interchangeable. Each of these arms has a size difference, so it’s not like you can mix and match or put two of the same components on the vehicle. Also, every manufactured vehicle has a lower control arm regardless of size. You’ll only find upper control arms on heavy-duty vehicles like SUVs and trucks.

The differences between upper and lower control arms may be minimal, but each has a distinct purpose. Whether you want upper or lower truck control arms, Supreme Suspensions® is the stop for you. With a wide array of control arms for your lifted truck, you’ll be able to drive and go off-roading like never before.