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4pc Rear Adjustable Control Arms Kit

Ford Bronco 21+ 4pc Rear Adjustable Control Arms Kit
SKU: F-BR-2021-AL-RS4 ★★★★★ (132 reviews)
Pick your vehicle to confirm fit

1,212.70 1212.7 USD 1,212.70

1,212.70

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Order today — ships within 1–3 business days
Enter ZIP for arrival estimate 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
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COLOR 12 colors — pick yours
https://core4x4.com/web/image/product.template/1375/image_1920?unique=edc8f61

4pc Rear Adjustable Control Arms Kit

Ford Bronco 21+ 4pc Rear Adjustable Control Arms Kit
SKU: F-BR-2021-AL-RS4
Pick your vehicle to confirm fit

1,212.70 1212.7 USD 1,212.70

1,212.70

COLOR 12 colors
Black Blue Charcoal Green LightGreen Orange Purple Red White Yellow Raw Aluminum Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed.
  • 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.
  • Hardware
    Choose upgraded hardware if your factory hardware is worn, damaged, or missing.
  • Note to Core4x4:

Select Color to see price and add to cart.

Order today — ships within 1–3 business days
Enter ZIP for arrival estimate change
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline

Lifetime warranty on all non-wear items Made In USA

1–3 day build time + Shipping

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 Flexibility Durability

Upgrade your Ford Bronco (2021-Present) with the Aluminum Series Rear Control Arms Set, engineered for maximum off-road articulation, improved axle alignment, and long-term durability. This complete rear suspension upgrade enhances both on-road comfort and off-road capability, offering a significant improvement over factory components.

Key Features Benefits

  • Precision-Engineered 7075 Aluminum – Constructed from 1.75” OD 7075 Aluminum, these control arms deliver exceptional strength while remaining lightweight, significantly outperforming stock components.
  • Extreme Off-Road Articulation – Johnny Joints at both ends allow for maximum suspension travel, improving off-road traction, axle control, and shock absorption.
  • Fully Adjustable for Lifted Vehicles – Designed to accommodate lifts from 0 to 6 inches, these control arms enable precise axle centering and pinion angle adjustments, optimizing suspension geometry for better handling and durability.
  • Machined Wrench Flats for Easy Adjustments – The left- and right-hand threaded bodies make fine-tuning your suspension simple, allowing for on-the-vehicle adjustments without removal.

Superior Lightweight Construction with 'Memory'

Crafted from high-strength 7075 Aluminum, these control arms provide a durable yet lightweight alternative to steel. Unlike traditional materials, 7075 Aluminum has a "memory" effect, meaning it can return to its original shape after taking an impact, ensuring long-lasting structural integrity.

Customizable Powder Coating

Showcase your Bronco’s unique style with our customizable powder coating options. Choose the raw aluminum finish for a sleek, high-performance look, or select from ten vibrant colors to match your build.

Proudly Made in the USA

Our Aluminum Series Rear Control Arms Set is proudly designed and manufactured in the USA, ensuring strict quality control, superior craftsmanship, and premium materials. Choosing CORE 4X4 means supporting American innovation and excellence.

Optional Hardware Upgrade

Designed for seamless installation using factory hardware, these control arms provide a straightforward upgrade. If you're dealing with rusted or stubborn bolts, we offer optional Grade 8 hardware kits separately for a hassle-free installation.


Make Model Submodel Years
Ford Bronco 2021 - Present

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

Construction & Materials

Ford Bronco 21+ 2pc Rear Lower Adjustable Control Arms

Rear Lower control arms built with 1.75” 7075 Aluminum. Forged Johnny Joints on both adjustable ends with 1.25” x 12 TPI - 2.625” long threads.

Ford Bronco 21+ 2pc Rear Upper Adjustable Control Arms

Rear Upper 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 Raw Aluminum or Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed.
Hardware No Hardware or Complete Kit
Placement on Vehicle Rear Upper, Rear Lower, Rear
Mounting Style Bolt-On
Google

Reviews of Core 4x4

See all on Google
5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
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
JI
Jerome Segura III Jun 26, 2025
Google
I bought the 16pc Cruise Series Adjustable Control Arm, Track Bar, Steering, End Link Kit to replace a worn budget 4" lift on my used JKU. These are top quality parts; very solid. Customer service is unsurpassed. They even matched prices on my order placed before the tax day sale. I made an error in ordering a drag link flip kit; they were quick to help me fix this too. There's peace of mind knowing these components are made in the USA. Thank you. 👍👍
Review photo 1 Review photo 2
DD
Dmitriy D May 27, 2025
Google
Installed rear and upper control arms and track bar on my 3rd Gen 4RUNNER to align rear axle and restore factory wheel base after 3.5" lift. Car drives better than New! Improved handling cornering and overall driving. Very solid and high quality made product. Support is outstanding. Shipping extremely fast. Thank you so much. I wish you will have something new for my car.
Review photo 1
JG
James Griffin Jul 26, 2025
Google
Customer service is top notch. They answered all of my questions and got me my tracking number for my packages. I just received both of them and the quality is next level. You guys are truly awesome.
Review photo 1
GK
GLENN KOSZKA Apr 27, 2025
Google
The folks at Core 4X4 are always wonderful to deal with. They explain your options and never pressure or rush things. The quality of the Core Control Arms is top shelf, especially if your goal is to stop wheel hop. I recommend Core 4x4 without reservation ! ! !
AL
Aaron Lake Apr 27, 2025
Google
Korby was a great help with getting me a set of leaf springs for my Cherokee. Great customer service and an awesome product all made in the USA. Proud to support and rock their parts on my vehicle. 👍 …
BS
Bailey Smith Mar 23, 2025
Google
Core 4x4 excels with precision and service and keeps nothing else higher in mind. Everyone I've met at the company is very honest and down to earth, 10/10 would recommend.
MT
Ma TheMeatLoaf Mar 23, 2024
Google
Their website estimated 2 days to get my parts but actually took 11. No communication to let me know what’s going on. Parts were missing. Some days they answer questions, some they don’t. Didn’t let me know I’d have to alter stock bolts to fit their parts. All around just seems like they don’t care.
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!
NP
Norb Pranger Oct 24, 2025
Google
Not sure where to start, Products or Service or Warranty. Products: I found Core4x4 through a very respected YouTuber in the Jeeping community. I purchased an entire set of Core4x4 Control Arms three years ago and have beat the daylights out of them and they are still in great condition. Now, I purchased another Jeep, this time for my daughter and bought yet another set of Control Arms because I know that these things can take a beating and stand up to it. I plan on replacing more parts on this TJ and my JL and will continue to buy from Core4x4. Service: This isn't some huge name conglomerate that treats you like you're just another customer. They are quick with responses and will always make things right should something be a problem. Oh and the quickness in which they ship their products is unmatched. I bought these CAs for my TJ on Thursday, I received them on Monday. Most other manufacturers will tell you weeks, they had them to me in 2 shipping days. Warranty: Seriously, a lifetime warranty? Yes please. Nothing more to say. I can't say enough about how great of a company this is. I've even spoken to the owner through email a few years back on some questions that I had. Support small American built businesses. P.S. Core 4x4, feel free to make me an ambassador and send me some swag :) .

Specifications

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