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Description, Reviews, Q&A
Brand | Core 4x4 |
Control Arm Length | Stock |
Control Arm Placement | Rear Upper |
Enhance your off-road experience with our Crawl Series Rear Upper Control Arms. Specifically designed to be compatible with Ford Bronco model years 2021-Present, these control arms are meticulously engineered to provide exceptional flexibility, and superior on-road manners, making your off-road adventures remarkably more exciting and comfortable.
The Crawl Series Rear Upper Control Arms are crafted with meticulous attention to detail. Made from DOM Tubing with a .313” wall thickness, these arms surpass industry standards, ensuring exceptional durability and performance. They feature the original Johnny Joints from Rock Jock 4x4 at both ends, delivering consistent, high-quality performance, even under the most challenging conditions.
Experience the advantage of ultimate adjustability. Our Rear Upper Control Arms are threaded both left and right handed, enabling easy adjustment of your pinion angle while installed and can accommodate lifts from 0 to 6 inches. These arms, when used in conjunction with our adjustable lower control arms, allow for the precise re-centering of your rear axle and exact adjustment of the pinion angle. They enhance ride quality, promoting precise alignment correction for a smoother, more controlled ride. For vehicles with lifts beyond 6 inches, please contact us for additional options and assistance.
All of our control arms undergo a rigorous two-stage powder coating process to maximize durability and resist corrosion. We begin with a zinc primer base to ensure maximum adherence, followed by a robust top coat in your choice of color. This process ensures a resilient and aesthetically pleasing finish, enhancing the durability and longevity of your control arms.
Our Crawl Series is a testament to superior American craftsmanship. We take pride in manufacturing our products domestically, offering you the benefits of our high-quality manufacturing standards, rigorous quality control, and dedicated customer service. By choosing our products, you are supporting American industry and the value of locally made products.
Our Rear Upper Control Arms can be conveniently installed using factory hardware. For those dealing with rusted or stubborn bolts, we offer optional new Grade 8 hardware kits, available separately, to ensure a smooth installation process.
Choosing the Crawl Series Rear Upper Control Arms means you're opting for the ultimate in off-road flexibility and on-road manners. Upgrade today and enjoy the benefits of precision alignment, superior performance, and outstanding durability, thanks to the innovative design and high-quality construction of our control arms.
Fitment:
Core 4x4 CRL-F-BR-2021-RU2
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Mar 11, 2025
Review shared from Core 4x4 Cruise Series Adjustable Front Lower Control Arms (93-98 Jeep Grand Cherokee ZJ)
Good
Easy to install. Just pops like every other adjustable arm. You better have some mojo to tighten the adjustment nut down, otherwise it'll pop worse than popcorn.
Feb 15, 2025
Review shared from Core 4x4 Cruise Series Adjustable Front and Rear Control Arms (99-04 Jeep Grand Cherokee WJ)
Great project
Perfect install! Exactly what I needed to finish the lift
Jan 26, 2025
Review shared from Core 4x4 Adjustable Rear Upper Control Arms; Tier 3 (07-18 Jeep Wrangler JK)
Core 4x4 Control Arms
These are extremely strong control arms that are fully adjustable. They do exactly what they are designed to do. I do quite a bit of off-roading and they hold up well and increase flex very well. Would recommend these to anyone looking for control arms.
Dec 26, 2024
Review shared from Core 4x4 Cruise Series Adjustable Rear Lower Control Arms (97-06 Jeep Wrangler TJ)
Good affordable
Very nice built CA. A very good affordable up grade
Dec 9, 2024
Review shared from Core 4x4 Cruise Series Adjustable Front Lower Control Arms (20-25 Jeep Gladiator JT)
Adjustable arms for gladiator
Installed easily one at a time. Nice adjustment and everything is heavy duty!
Oct 16, 2024
Review shared from Core 4x4 Adjustable Front Lower Control Arms; Tier 2 (07-18 Jeep Wrangler JK)
Core 4x4
This would have taken me a little over an hour to install if I had not bought a cheap set first. The first set I purchased ended up being made with the incorrect angles. After a day and a half of adjustments and loosening the entire suspension I had to return them. Core 4x4 are built and powder coated in the US so they take a little long to get but are worth the wait and the money. Their customer support answered the phone on a Saturday and gave me the starting measurements for the control arms per the set up on MY jeep. Great customer service and a great product.
Sep 23, 2024
Review shared from Core 4x4 Cruise Series Adjustable Front Lower Control Arms (18-25 Jeep Wrangler JL)
Solid buy
These were simple to adjust and install. Once the bolts were broken loose on the stocks arms of course... Definitely an upgrade from stock, and a must have if you are doing a lift (I did either a 3" or 3.5", can't remember lol). Happy with this product.
Aug 29, 2024
Review shared from Core 4x4 Cruise Series Adjustable Front and Rear Control Arms (97-06 Jeep Wrangler TJ)
2001 TJ Wrangler
Beefy control arms. Allowed me to adjust the front and rear axles to their proper locations and differentials pinion angles after installing a 2.5" lift. Greaseable is nice.
Jul 16, 2024
Review shared from Core 4x4 Cruise Series Adjustable Front and Rear Control Arms (18-25 Jeep Wrangler JL)
fit perfect
these adjustable control arms. are heavy duty and worked realy well
Jun 28, 2024
Review shared from Core 4x4 Cruise Series Adjustable Upper and Lower Control Arm, Track Bar and Currectlync Kit (97-06 Jeep Wrangler TJ)
Great upgrade for our lifted jeep
We have a 4 inch lift on our Jeep from the previous owners and they didn’t do all that I felt was needed for safety running 35 inch tires. This was a great kit for us and the way we will use the Jeep. I was able to install all the parts myself although I did have some rusty bolts to contend with. I had it professionally aligned after, and it’s driving fantastic now!