Why do I need adjustable upper control arms after installing a lift?

When you lift a Jeep, the axle's angle changes relative to the transfer case. Adjustable upper control arms allow you to correct the pinion angle, which is important for driveline angles and reducing vibrations.

What is a Johnny Joint and why is it used here?

A Johnny Joint is a type of high-angle, greasable spherical bearing that allows for significant movement. It's used in these control arms to accommodate the articulation needed for off-roading and to handle suspension flex without binding.

Do these control arms come with all the necessary hardware for installation?

The control arms themselves feature a formed steel fork and jam nut for adjustment. It's recommended to refer to the manufacturer's installation instructions for a complete list of any additional hardware or components that may be required for proper installation.

Specifications

Brand: RockJock
Part #: CE-9807FUA
UPC: 810038153223

RockJock JK Johnny Joint Control Arms Front Upper Adjustable Pair

Name: RockJock JK Johnny Joint Control Arms Front Upper Adjustable Pair
Brand: RockJock
SKU: rockjock-rockjock-jk-johnny-joint-control-arms-front-upper-adjustable-pair-t14-565506
Price: 419.84 USD
Availability: BackOrder

$419.84

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2007-2017 Jeep Wrangler. RockJock adjustable front upper control arms allow pinion angle adjustment after lift installation.

Key Features

Fits 2007-2018 Jeep Wrangler JK and JK Unlimited.
Adjustable length allows for precise pinion angle correction after suspension lifts.
Fabricated from strong 1.25 in. o.d. x .188 in. wall DOM steel tubing.
Features a 2 in. Johnny Joint rod end for maximum articulation and serviceability.
Includes a formed steel fork and jam nut for easy length adjustment.
Finished in a durable semi-gloss black powder coat.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you've installed a suspension lift on your Jeep Wrangler JK and need to dial in the pinion angle, or if you're planning future lift height changes, these adjustable front upper control arms from RockJock are a solid option. They replace your stock front upper arms and give you the flexibility to make those crucial adjustments after lifting your vehicle.

These arms are built tough using 1.25-inch outer diameter, .188-inch wall DOM steel tubing, which is known for its strength and durability. On one end, you've got a 2-inch Johnny Joint rod end, a popular choice for its ability to handle extreme articulation while remaining serviceable. The other end features a formed steel fork and jam nut, allowing you to easily adjust the arm's length. The arms are finished in a semi-gloss black powder coat to help protect them from the elements. For even more articulation, consider adding the CE-9102JK Johnny Joint kit to your front differential.