How do I adjust the pinion angle with these control arms?

The control arms feature RH/LH threaded adjuster ends. You can turn these adjusters to change the length of the arm, which in turn alters the pinion angle. This adjustment can be made without removing either end of the arm from the vehicle.

What are Johnny Joints and why are they used here?

Johnny Joints are a type of high-angle, durable rod end designed for maximum articulation. They allow the suspension components to move freely, which is beneficial for off-road driving and maintaining tire contact with the ground over uneven terrain.

What is DOM steel tubing?

DOM stands for Drawn Over Mandrel. It's a type of steel tubing that is manufactured to tighter tolerances and has a more consistent wall thickness compared to standard tubing. This makes it a strong and reliable material for suspension components.

RockJock 2021+ Bronco Johnny Joint Rear Upper Control Arm Set Steel Adjustable

Specifications

Brand: RockJock
Part #: RJ-182500-101
UPC: 810038155852

RockJock 2021+ Bronco Johnny Joint Rear Upper Control Arm Set Steel Adjustable

Name: RockJock 2021+ Bronco Johnny Joint Rear Upper Control Arm Set Steel Adjustable
Brand: RockJock
SKU: rockjock-rockjock-2021-bronco-johnny-joint-rear-upper-control-arm-set-steel-adju-t14-565954
Price: 417.79 USD
Availability: BackOrder

$417.79

On Backorder — Expected to ship by May 3, 2026

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

Fits 2021-2025 Ford Bronco. RockJock adjustable rear upper control arms allow pinion angle adjustment after lift installation.

Key Features

Fits 2021-2025 Ford Bronco.
Includes a set of adjustable rear upper control arms.
Features RH/LH threaded adjuster ends for easy pinion angle correction.
Constructed from 1.625 in. o.d. x .250 in. wall DOM steel tubing.
Equipped with forged 2 1/2 in. Johnny Joint rod ends for maximum articulation.
Finished with a semi-gloss black powder coat and gold zinc plated forged ends.

⚠️ 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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Fits this vehicle

Ford Bronco 2021-2025

Product Details

This set includes the adjustable rear upper control arms for your 2021-2025 Ford Bronco. These arms are built to help you dial in your suspension, especially after installing a lift kit. They allow for precise adjustments to your pinion angle without needing to remove the arms from the vehicle, making the setup process much smoother. This adjustability also means you can adapt the arms if you decide to change your lift height down the road, saving you from buying new parts later.

RockJock fabricates these arms from strong 1.625-inch outer diameter DOM steel tubing with a .250-inch wall thickness, giving them solid durability. For maximum articulation and flex, they feature forged 2 1/2-inch Johnny Joint rod ends on both ends. These joints have 1 1/4-inch RH/LH threads and come with jam nuts for secure adjustment. The arms are finished with a semi-gloss black powder coat, while the forged ends get a gold zinc plating for added protection and a distinct look.