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Control Arms
Ford Bronco 21+ 2pc Crawl Series Rear Lower Adjustable Control Arms
SKU: CRL-F-BR-2021-RL2 ★★★★★ (132 reviews)
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451.98 451.98 USD 551.20

551.20

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Order today — ships by Mon, Jun 1
Salt Lake City, UT change
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline
Lifetime warranty Fitment guarantee Ships from Orem, UT 4–8 hr install
Free mounting hardware included — a $20 value
COLOR 11 colors — pick yours
https://dev.core4x4.com/web/image/product.template/1911/image_1920?unique=79f0eb9

2pc Crawl Series Rear Lower Adjustable Control Arms

Ford Bronco 21+ 2pc Crawl Series Rear Lower Adjustable Control Arms
SKU: CRL-F-BR-2021-RL2
Pick your vehicle to confirm fit

451.98 451.98 USD 551.20

551.20

(Save 18%)

COLOR 11 colors
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.
Compare all tiers →

Build Your Kit

  • Vehicle
  • Brand
  • Color
  • Series
  • Hardware
  • Lift Size
  • Note to Core4x4:

Select Color to see price and add to cart.

Order today — ships by Mon, Jun 1
Salt Lake City, UT change
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline
Free mounting hardware included — a $20 value

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
Fully Adjustable 0-6" of lift
3 X-Series Options Only Core 4x4

Unmatched Off-Road Performance On-Road Stability

Discover the pinnacle of off-road performance with the Crawl Series Rear Lower Control Arms. Engineered for Ford Bronco models from 2021 to present, these control arms combine superior on-road behavior with uncompromised off-road capabilities. Designed to outperform competitors, they deliver exceptional durability and unmatched strength for all your adventures.

Expertly Engineered for Superior Construction

  • Heavy-Duty DOM Tubing – Crafted from 1.75” OD DOM Tubing with a 5/16” wall thickness, these control arms are built to withstand the toughest conditions.
  • Johnny Joints for Maximum Flexibility – Equipped with original Johnny Joints at both ends, they provide superior articulation, durability, and strength, allowing them to endure the harshest off-road challenges with ease.

Easy Adjustability for Precision Alignment

  • Fully Adjustable Design – Features left and right-hand threads for simple modifications to wheel centering and alignment while installed.
  • Accommodates Lift Heights from 0 to 6 Inches – Enables precise alignment correction, rear axle re-centering, and pinion angle adjustments.
  • Recommended Pairing – Pair these with our adjustable upper control arms for a comprehensive solution to fine-tuning your suspension. For lifts beyond 6 inches, additional options 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 – Available in 10 custom color options to add a personalized finish that matches your Jeep’s style.

Proudly Made in the USA

The Crawl Series represents the best in American craftsmanship, with each component designed and manufactured in our Orem, UT facility. By sourcing local materials and overseeing the entire production process, we ensure exceptional quality and support for domestic industries.

Straightforward Installation

Our Crawl Series Rear Lower Control Arms are designed for hassle-free installation using your vehicle’s existing factory hardware. For vehicles with rusted or stubborn bolts, we offer optional Grade 8 hardware kits to ensure a secure and smooth installation process.

 

  • Vehicle Fitment: Ford Bronco 21+ – Designed to improve rear axle alignment, suspension durability, and handling for both on-road and off-road applications.

  • CORE Advantage: Outperforms competitors with dual forged joints for maximum articulation, superior durability, and on-vehicle adjustability, eliminating limitations of traditional control arms.

  • Adjustability: Fully adjustable to accommodate lifts from 0 to 6 inches, allowing precise rear axle re-centering, alignment correction, and optimized pinion angle.

  • Construction: Built from 1.75” OD 5/16” wall DOM tubing with Johnny Joints at both ends, ensuring unmatched articulation, durability, and strength for extreme terrain and heavy-duty use.

  • Two-Stage Powder Coating: Zinc primer base and top coat available in 10 vibrant colors protect against corrosion and allow for personalized styling of your rig.

  • Warranty and Origin: Proudly manufactured in the United States, our product includes a lifetime warranty on all non-wear items, providing you with confidence and peace of mind in your purchase.

Built With

Rear Lower control arms built with 1.75” OD 5/16” Wall DOM. Forged Johnny Joints on both adjustable ends with 1.25” x 12 TPI - 2.625” long threads.

Make Model Submodel Years
Ford Bronco 2021 - Present

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

Construction & Materials

Rear Lower control arms built with 1.75” OD 5/16” Wall DOM. Forged Johnny Joints on both adjustable ends with 1.25” x 12 TPI - 2.625” long threads.

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"+
Placement on Vehicle Rear Lower, Rear
Mounting Style Bolt-On

Use the vehicle selector on our website to shop by your year, make, and model. On product pages, use the kit builder to select your color, series, lift height, and any add-on options, then add to cart. If you need help, call or email our team.

Standard orders typically ship within 1–3 business days of ordering. Custom color orders take approximately 5–10 business days. Because everything is built in-house, we can turn orders quickly even for custom specifications.

You can reach our team through the contact form on our website, or browse to the Contact Us page. Our team is available to answer pre-sale and technical questions before and after your purchase.

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Reviews of Core 4x4

See all on Google
5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
SG
Sal Giordano Sep 24, 2025
Google
I want to take the time to share my experience with Core 4x4. I have a 2004 Jeep Wrangler and was looking to upgrade some suspension parts. I went with Core 4x4 upper & lower adjustable control arms and a front adjustable track bar. Everything arrived quickly, and right out of the box I was impressed with the quality and craftsmanship. I had a few questions during installation (measurements and torque specs), and I spoke with Korby on a couple of occasions. Not only did he send me detailed instructions, but he also shared an installation video specific to the part and vehicle I was working on, something you don’t get from many companies. The control arms fit perfectly, look great, and perform exactly as I hoped. I did run into an issue with the front track bar touching the front diff. When I reached out, Korby had me send pictures and then immediately offered two solutions: his bar guy could make a different bend and send it out to me, or I could get a full refund. His response honestly blew me away. As much as I wanted to run the Core 4x4 track bar, I chose the refund. Korby sent me a prepaid shipping label right away, no hassle. My experience with Core 4x4 has been excellent. Korby was extremely understanding, communicative, and helpful every step of the way. The parts I received were high quality, and the customer service was second to none. I would absolutely recommend Core 4x4 10 out of 10 times and will be using them again. Just a great American company with awesome people who truly care about their customers. Thank you Korby, and thank you Core 4x4!
RC
Robert C May 27, 2025
Google
Fantastic products! Outstanding performance!! Absolutely the best customer service!! You will not be disappointed!
TR
Tim Reigies Mar 25, 2018
Google
Received the track bar I ordered, product looks extremely strong, thx core 4x4
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!
RH
Roger Hooks Jun 26, 2025
Google
2018 Ram 2500 Rear Control Arms and Rear track Bar been running for about a year, Great Solid Products and great one on one customer service, same day response with issue resolved! Thanks Korby!
MN
Mike Nielsen Nov 23, 2025
Google
The customer service is first class. I had an issue with a track bar I installed on my F350. I don’t have any other Core 4x4 parts yet, but with the way I was treated, I know their parts are well done, because they went above and beyond to make sure I was made whole. They wouldn’t be in business if they had to take care of a lot of people like they took care of me. Will definitely be back when it’s time to build the Jeep!
RT
Ruby Timm Apr 27, 2025
Google
Bought a new 2019 Ram 1500. Had bad rear wheel hop since new, got all four core 4x4 control arms and it fixed the issue. Thanks
MS
Mr. Smith Nov 23, 2025
Google
Have yet to get to try them but I bought some upper, and then later , lower control arms for my 03 rubicon. The pricing is very fair, so fair I was hesitant to even purchase. When the product came in I was happily mistaken. These are some beefy units with an incredible warranty! I’m very excited! I went with the “Camp”series as I mostly daily it. I have trouble with the shipping at times when I ordered but Corby is quick to notice things and help communicate the solution. Looking forward to buying more parts!
Review photo 1
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.
DS
Dana Smith Jul 26, 2025
Google
Excellent, strong, and durable products—perfect for both on-road and off-road applications. The customer service is outstanding—friendly, knowledgeable, and extremely helpful with understanding installation and ensuring I got exactly what I needed. I would definitely order again. Top-notch company with high-quality products made right here in the U.S.A.
Review photo 1 Review photo 2 Review photo 3

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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