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907.16 907.16 USD 1,007.95

1,007.95

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Ford Bronco 21+ 4pc Crawl Series Rear Adjustable Control Arm Kit

SKU: CRL-F-BR-2021-RS4
Fits: 2021 - Present Ford Bronco Add vehicle

907.16 907.16 USD 1,007.95

1,007.95

Starting at $110/mo or 0% APR with . See if you qualify

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.

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

Unmatched Flexibility Durability

Elevate your off-road performance with the Crawl Series Rear Control Arms Set, specifically designed for Ford Bronco model years 2021-Present. This set includes two upper (CRL-F-BR-2021-RU2) and two lower (CRL-F-BR-2021-RL2) control arms, offering a comprehensive upgrade that combines exceptional durability with unmatched flexibility. These control arms deliver superior handling and stability, enhancing your vehicle’s capabilities both on and off the road.

What's Included in the Kit

  • Crawl Series Upper Control Arms (CRL-F-BR-2021-RU2)
  • Crawl Series Lower Control Arms (CRL-F-BR-2021-RL2)

Superior Construction

Crafted from premium 5/16” wall DOM Tubing, our upper and lower control arms are built for strength and endurance. Featuring original Johnny Joints at both ends, these components deliver outstanding off-road articulation while maintaining durability and resilience, outperforming factory parts and other aftermarket options.

Easy Adjustability for Precision Alignment

Designed with left and right-hand threaded bodies, these control arms provide effortless adjustability. Fine-tune your suspension setup directly on the vehicle to achieve optimal axle centering and pinion angle adjustments. The Crawl Series Rear Control Arms Set accommodates lifts ranging from 0 to 6 inches, ensuring precise alignment and improved performance. For lifts beyond 6 inches, additional solutions are available upon request.

Durable Two-Stage Powder Coating

All control arms are subjected to a dual-layer powder coating process. Starting with a zinc primer for corrosion resistance, each arm is finished with a top coat in your choice of color from our palette of 10 options. This ensures a robust finish that resists harsh environmental conditions while allowing you to customize your vehicle's appearance.

Made in the USA

The Crawl Series represents the best in American craftsmanship. Manufactured in our Orem, UT facility using locally sourced materials, these control arms reflect CORE 4X4’s commitment to exceptional quality and performance while supporting American manufacturing.

Straightforward Installation

Installation is designed to be simple, using factory hardware for a seamless setup. For situations involving rusted or stubborn bolts, optional Grade 8 hardware kits are available separately to ensure a hassle-free process.

Key Features and Benefits

  • Premium 5/16” wall DOM Tubing for maximum strength and durability
  • Equipped with original Johnny Joints for superior articulation
  • Effortless adjustability with left and right-hand threaded bodies
  • Compatible with lifts ranging from 0 to 6 inches, with additional solutions available
  • Dual-layer powder coating for corrosion resistance and customization
  • Manufactured in the USA with high-quality, locally sourced materials
  • Simple installation using factory hardware, with optional hardware kits available

 

Make Model Submodel Years
Ford Bronco 2021 - Present

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

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"+

See It Installed

Install videos and build guides on our YouTube channel.

Watch more installs on YouTube
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Reviews from Google

See all on Google
5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
AP
Ajay Paynter Mar 4, 2026
Google
Great company, who worked with me on shipping parts to arrive in time for a show. When I explained my concern they went above and beyond to make it happen. Quality of the parts is top notch.
RC
Ryan Colligan Mar 4, 2026
Google
I have nothing but good things to say about Core 4x4. I have the crawler series on my JKU and we take it all over the place. These parts handle everything we throw at them.
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.
DN
Devan Nelson Mar 25, 2019
Google
Had a great experience with Core 4x4, I desperately needed a custom track bar and found out just a couple days before Easter Jeep Safari. Spence was a huge help and made it happen with plenty of time to spare. Their parts are top notch!
Z
Zion Sep 24, 2025
Google
Every product I have received from them has been nothing short of fantastic. Korby in Customer service went above and beyond to help me fix my own mistake. I cannot reccomend them enough.
JA
Jonathan Aguilera Jan 22, 2026
Google
Great experience with Core 4x4! I purchased some suspension parts for my dad's 98 Jeep TJ. The products they make are super durable and look even better in person. Attention to detail and overall superior quality. The staff at Core 4x4 is super helpful also, Korby has been great. Updating me on the status of my order and sending me tracking numbers as well. Thank you all at Core 4x4, keep up the amazing work!
RG
Robert Van Gorder Apr 27, 2025
Google
Amazing service. Bought a track bar through Americantrucks.com and they sent it with the wrong size bushing sleeve. Korby at Core 4x4 was quick to get me the correct size and very responsive. Will definitely be using more of their stuff.
TR
Tim Reigies Mar 25, 2018
Google
Received the track bar I ordered, product looks extremely strong, thx core 4x4
JM
Jason Mitchell Dec 8, 2025
Google
Installed the full kit on my XJ. Ride quality is night and day better than what I had before. The articulation on the trail is insane. These guys know what they are doing. Already recommended Core 4x4 to everyone in my club.
PG
Paul Griffin Feb 21, 2026
Google
Great long arm kit with everything else I needed as well! They worked with me to ensure that I was getting an upgraded components kit just like I wanted. Fast shipping with some of the best packaging that I have ever seen. Nothing was scratched or missing and this kit is even more impressive than the videos or website can show. Powder coating looks great with no issues. I would highly recommend CORE 4x4 to anyone looking for a great quality kit.
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