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SKU: CRL-F-BR-2021-RU2 ★★★★★ (132 reviews)
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LIFETIME WARRANTY
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FITS YOUR EXACT VEHICLE
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SHIPS IN 1–3 DAYS
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MADE IN UTAH, USA
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$ 478.75 478.75 USD $ 503.95

$ 503.95

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🔧 Built to order · Ships in 1–3 business days

COLOR 11 colors — pick yours
https://jerdev.core4x4.com/web/image/product.template/1955/image_1920?unique=8313092
SKU: CRL-F-BR-2021-RU2
Fits: 2021 - Present Ford Bronco Add vehicle
Add Vehicle Google 5.0 ★★★★★ (132 reviews)

$ 478.75 478.75 USD $ 503.95

$ 503.95

Build Your Kit

  • Vehicle
    Confirm this matches your vehicle. Use Shop by Vehicle to filter correctly.
  • Brand
  • Color
    Powder coat color for control arms and track bars. Does not affect performance.
  • Series
    Cruise: daily driving and light off-road. Camp: overlanding. Crawl: aggressive rock crawling.
  • Hardware
    Choose upgraded hardware if your factory hardware is worn, damaged, or missing.
  • Lift Size
    Choose your current front lift height. Measure from center of wheel to fender if unsure.
  • Note to Core4x4:

Select Color to see price and add to cart.

WHAT’S INCLUDED
4
Upper Control Arms
4
Lower Control Arms
2
Front Track Bars
2
Rear Track Bars
4
End Links

4–8 hr install Moderate Alignment recommended Lifetime warranty on all non-wear items Made In USA

Made in USA Orem, Utah
Lifetime Guarantee Unconditional
10 Colors In-house powder coat
Ships in 3 Days From our UT facility
Fully Adjustable 0-6" of lift
3 X-Series Options Only Core 4x4

Why Builders Choose CORE 4X4

Warranty facts, not marketing language.

vs. MetalCloak

Their “lifetime” language refers to their service model. Actual parts warranty: 1 year. Ours: lifetime.

vs. Teraflex

Skip a maintenance interval? Their warranty voids. Ours doesn’t.

vs. Clayton Off Road

Clayton warrants their Johnny Joints for 90 days. We cover ours for life.

Superior Off-Road Performance

Elevate your off-road experience with the Crawl Series Rear Upper Control Arms. Specifically crafted for Ford Bronco model years 2021-Present, these control arms are engineered for superior flexibility and precise on-road performance, making your vehicle ready for any adventure.

What’s Included in the Kit?

  • Crawl Series Rear Upper Control Arms (SKU: CRL-F-BR-2021-RU2)

Precision Engineered for Maximum Durability

Crafted from durable 5/16” wall DOM Tubing, the Crawl Series Rear Upper Control Arms are designed to exceed industry standards. Each arm is equipped with original Johnny Joints from Rock Jock 4x4 at both ends, providing unmatched articulation and resilience even in the most challenging off-road environments.

Ultimate Adjustability for Complete Control

Experience easy and precise suspension adjustments with left and right-hand threaded design. These control arms allow on-vehicle adjustments to fine-tune pinion angles and rear axle centering. They are compatible with lifts from 0 to 6 inches and work seamlessly with our adjustable lower control arms to optimize alignment and suspension performance. For vehicles with lifts exceeding 6 inches, custom solutions are available upon request.

Two-Stage Powder Coating for Superior Protection

To ensure long-lasting durability and corrosion resistance, these control arms undergo a rigorous two-stage powder coating process. Zinc primer base coat provides advanced protection against rust and environmental elements. Durable top coat is available in 10 custom color options to add a personalized finish that matches your vehicle’s style.

Proudly Crafted in America

Manufactured in Orem, UT, the Crawl Series Rear Upper Control Arms embody the highest standards of American craftsmanship. Our in-house production ensures meticulous quality control and supports local industries, delivering a product you can trust.

Optional Hardware Upgrade

Designed for straightforward installation with factory hardware, our Rear Upper Control Arms make upgrades simple. For rusted or stubborn bolts, optional Grade 8 hardware kits are available separately to facilitate a hassle-free setup.

In Conclusion

The Crawl Series Rear Upper Control Arms provide superior strength, adjustability, and off-road articulation for Ford Bronco owners looking to maximize performance. Whether you're conquering rugged trails or refining your vehicle’s suspension for smooth highway driving, these control arms ensure the perfect balance of durability and flexibility. Upgrade today and experience the next level of off-road control!


Optional Hardware Upgrade

Designed for straightforward installation with factory hardware, our Rear Upper Control Arms make upgrades simple. For rusted or stubborn bolts, optional Grade 8 hardware kits are available separately to facilitate a hassle-free setup.

In Conclusion

The Crawl Series Rear Upper Control Arms provide superior strength, adjustability, and off-road articulation for Ford Bronco owners looking to maximize performance. Whether you're conquering rugged trails or refining your vehicle’s suspension for smooth highway driving, these control arms ensure the perfect balance of durability and flexibility. Upgrade today and experience the next level of off-road control!


Make Model Submodel Years
Ford Bronco 2021 - Present

Each rebuild kit includes all necessary components to replace and restore wearable parts.

Master Rebuild kit for CRL-F-BR-2021-RU2 $ 84.00

Vehicle Ford Bronco (21–Present)
Brand CORE 4X4
Color Black or Blue or Charcoal or Green or LightGreen or Orange or Purple or Red or White or Yellow or Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed.
Series Crawl Series
Hardware No Hardware or Complete Kit
Lift Size 0" — 6" or 6"+

Select your lift size in Step 1 — the kit ships with the correct geometry for that height. If you’re running a non-standard setup, call us before ordering and we’ll confirm compatibility.

Death wobble is a geometry problem, not just worn parts. Cruise Series corrects caster angle and eliminates the flex points that let shimmy start. Replacing one part at a time delays the fix — this replaces the geometry.

Yes, if you’ve done a lift kit before. Full-day project. Watch the complete JT install walkthrough on our YouTube channel — most owners wrap it in a day. Any off-road shop can run it if you’d rather have it done.

Any non-wear component fails — we replace it. No mileage cap. No maintenance intervals to track. No fine print about voiding if you miss a service. Lifetime means lifetime.

Teraflex’s lifetime warranty voids if you miss a maintenance interval. MetalCloak’s actual parts warranty is 12 months — their “lifetime” language refers to their service program. No conditions here.

See It Installed

Install videos and build guides on our YouTube channel.

Watch more installs on YouTube
Google

Reviews from Google

See all on Google
5.0
★ ★ ★ ★ ★
132 reviews
5 ★
97%
4 ★
2%
3 ★
0%
2 ★
1%
1 ★
0%
BW
Brian Wadsworth Jun 26, 2025
★ ★ ★ ★ ★ Google
Amazing product! Shipping was quick, packaging was great and support was outstanding!!
A
Adam Oct 24, 2025
★ ★ ★ ★ ★ Google
I couldn't have been more excited for the initial unboxing of these new Core 4x4 UCA's! They appear to be so well built and just a true quality product. Installation was a breeze and the initial testing with the forklift appears to have given me some additional flex with less binding on the rest of the components now that the geometry is back properly aligned. Time will tell how they hold up on my near future off-road adventures but I don't have any doubt that they are up to the task!
L
luke Mar 24, 2021
★ ★ ★ ★ ★ Google
Excellent quality product and service. My l lower control arms broke and within the same day core 4x4 hooked me up with tier 2 arms and with the color I wanted. My Jeep rides better and has been solid for several months so far. 10/10 would recommend their products to anyone.
MV
Mr. V Mar 24, 2021
★ ★ ★ ★ ★ Google
Good quality parts, much stronger than stock
DD
DANIEL DUSSAULT Nov 23, 2025
★ ★ ★ ★ ★ Google
Very beefy items for a very reasonable price.  Personally have CORE rear track bar and all upper control arms for my 04 Jeep TJ.  Had a slight issue with control arm length and they went above and beyond to swap jam nuts to get me where I needed to be.  Really have to appreciate a company like this.
D
David Nov 23, 2025
★ ★ ★ ★ ★ Google
First of I just want to say Great customer service korby Has helped me from the start and has not let me down! Reached out to him again today and he was able to warranty some parts out for me. As far as the quality of the parts.. excellent! The build quality is great. I can definitely tell a Difference from the cheap oem rear control arms to these and the pan hard bar. Color, From what I can tell it’s super durable been through a few mud holes on top of the daily road grime and after a quick wipe they still pop! Overall I recommend. Customer service is everything for me and it’s definitely there at Core 4x4.
D
Danny Oct 24, 2025
★ ★ ★ ★ ★ Google
Outstanding customer service to match the high quality parts. This is the go-to company.
DA
Dastrup Auto Mar 25, 2019
★ ★ ★ ★ ★ Google
I have bought a bunch of sets of arms, track bars and even had custom work done by Core 4x4. Just yesterday, Spence and Cam delivered an awesome cross member they designed and built for me! All of their products have been exceptional! I have personally seen their progression with design changes/updates. They truly take pride in their work and products. Quality control is second to none! They’ve also helped me diagnose issues with different jeeps I’ve had, as well as Dodge/Rams. These guys know their stuff! Really! I trust them whole heartedly and absolutely love their products/quality of work! I’ve referred many people, and will always continue to do so. Keep up the good work Core4x4!
MT
Marcus Torres Jan 15, 2026
★ ★ ★ ★ ★ Google
Best control arms I have installed on any of my builds. After running every major manufacturer, Core 4x4 is on par or better than all the high-end companies at a fraction of the cost. Lifetime warranty is the cherry on top.
A
Aaron Mar 23, 2024
★ ★ ★ ★ ★ Google
I have recently come to know Core 4x4 when I purchased a Jeep XJ and was looking for a place that had dedicated XJ suspension and components. Here is what makes them different than most other shops. All of their components are top shelf quality and they back it up if you break any of it. I was able to see their shop when I picked up an order locally and was impressed with their attention to detail and how they assemble and powder coat each part. I had an issue with a shackle and needed the threaded shaft to be shorter. I called in and talked to Kaden and he told me to come by and they would shorten it for me. When I got there, Kaden and Spencer (the owner) met me and talked about options and proceeded to make the right adjustments to fit my XJ. Told me if anything changes in the future and I need additional length, they would take care of me. So what really sets them apart from others is their Customer Service. Try calling in to any other Jeep suspension or part shop and see how they treat you. Been there - done that. Will continue to do business with Core and their team. Getting that kind of service for just a shackle has me thinking I may need to replace my JT components with Core's. Thanks Guys for being helpful good humans!

Specifications

Color Black, Blue, Charcoal, Green, LightGreen, Orange, Purple, Red, White, Yellow, Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed.
Hardware No Hardware, Complete Kit
Lift Size 0" — 6", 6"+
Vehicle Ford Bronco (21–Present)
Brand CORE 4X4
Series Crawl Series
Note to Core4x4: -
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