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Ram TRX 21-24 2pc Rear Upper Adjustable Control Arms

SKU: R-TRX-2021-AL-RU2
Fits: 2021 - 2024 Ram TRX Add vehicle

1,049.95 1049.95 USD 1,049.95

1,049.95

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    Powder coat color for control arms and track bars. Does not affect performance.
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4–8 hr install Moderate Alignment recommended Lifetime warranty on all non-wear items Made In USA

Unmatched Strength, Stability, and Adjustability

Elevate your 2021-Present RAM TRX’s performance with the CORE 4X4 7075 Aluminum Rear Upper Control Arms (R-TRX-2021-AL-RU2)—a premium suspension upgrade crafted for the ultimate off-road experience. Built to dominate high-speed desert racing, rocky trails, and anything else you can throw at it, these arms add precision handling, superior strength, and perfect axle alignment to an already formidable truck. If you’re looking for an elite component that matches the TRX’s unmatched prowess, these rear upper control arms deliver the goods.

Key Features and Benefits

  • Heavy-Duty 7075 Aluminum Construction – Fabricated from 2.5” OD 7075 aluminum for maximum strength, corrosion resistance, and weight savings over traditional steel.
  • Massive 3.0” Rock Jock Johnny Joints – Built with fully greaseable, rebuildable 1.5” threaded joints for unparalleled durability, flexibility, and articulation in punishing off-road conditions.
  • On-Vehicle Adjustability for Precision Alignment – Left-hand and right-hand threaded adjusters enable quick fine-tuning of axle position and pinion angles without arm removal.
  • Engineered for Extreme Off-Road Desert Racing – Delivers superior tracking, reduced tire wear, and remarkable ride quality under the most intense, high-speed performance demands.

Recommended Pairing

For a fully optimized rear suspension setup, pair these upper arms with the CORE 4X4 7075 Aluminum Rear Lower Control Arms (R-TRX-2021-AL-RL2) to maximize stability and control.

Performance-Driven Engineering for Maximum Control

Our 7075 aluminum rear upper control arms are expertly designed to correct factory shortcomings, improve traction, and handle extreme load demands. These arms provide smoother suspension travel and minimize stress on bushings and mounts. They offer on-the-fly adjustability for perfect pinion angles and axle centering while delivering unmatched resilience in high-speed desert runs, crawling over challenging terrains, or towing heavy loads. This isn’t just an upgrade—it’s the definitive step toward unlocking your RAM TRX’s off-road supremacy and preserving long-term reliability.

Two-Stage Powder Coating for Maximum Durability

To protect against corrosion and harsh environmental conditions, each aluminum component undergoes a rigorous two-stage powder coating process. Each part receives a zinc primer base coat to ensure lasting rust protection, followed by a top coat available in 10 colors so you can match your truck’s aesthetic and maintain a premium finish.

Proudly Made in the USA

Manufactured in Orem, UT, our CORE 4X4 7075 Aluminum Rear Upper Control Arms use American-sourced materials and meet strict quality standards. By supporting American-made products, you invest in top-tier craftsmanship and dependable performance.

In Conclusion

The CORE 4X4 7075 Aluminum Rear Upper Control Arms are the premier suspension upgrade for discerning RAM TRX owners who demand superior control, unrivaled strength, and absolute adjustability. By replacing vulnerable stock components with aircraft-grade 7075 aluminum, you secure a performance boost that keeps your off-road machine ready for the most extreme conditions.

Equip your RAM TRX with these upper control arms and unleash its full potential—because your truck deserves only the best.

 

Make Model Submodel Years
Ram TRX 2021 - 2024

Vehicle Ram TRX (21–24)
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.

See It Installed

Install videos and build guides on our YouTube channel.

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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.
C
Chris Oct 24, 2025
Google
Great product for a good price. Customer service is top notch, I had an issue which was self cause and Core 4x4 helped me out even though it was my own fault. Would definitely recommend and use them again.
EC
Eric Cox Jul 26, 2025
Google
Prompt, professional, and courteous service! Quality parts and broad assortment of products to suite your 4x4 needs:)
RR
Ryan Rogers Aug 25, 2025
Google
I purchased a set of the Cruiser Series control arms for my Jeep Jk based on postive reviews from different Jeep Facebook pages. Ordered and 2 days later realized they had the very same exact arms on sale in the overstock section. Called them up and they refunded me the savings from my original purchase. Amazing, honest service. Can't wait to get them installed. Keep up the good work guys.
RH
Rex Hodges Jun 26, 2025
Google
After ordering an upper and lower adjustable control arm kit manufactured by CORE 4X4 from a jeep parts distributor who's intials are E.T., they came with 3 of the threaded ends missing. After over 2 months of phone calls and emails to this E.T. company nothing was resolved. I finally decided to call CORE 4X4 myself and tell them my dilemma. I spoke with a very personable and professional gentleman named Korby, who is one of CORE 4X4's representatives, after a brief discussion of what I went thru he simply asked me for a picture and some measurements and the items I was missing and asked if I could cover ONLY the cost of shipping and I had my missing parts in exactly 1 weeks time. This company not only builds all it's parts in the U.S.A., they stand behind their products with great customer service and life time warranty. My experience with this company and their Rep Korby was fantastic. I would definitely recommend CORE 4X4 to anyone who needs parts for any 4x4 projects. You just can't beat their quality and service. Rex Hodges Valparaiso, Indiana
JF
jacob fezza Mar 24, 2022
Google
I wanted to take a moment and give these guys a shout out, I’ve currently got, for my xj, their adjustable control arms, tier 4 adjustable track bar and adjustable leaf spring shackles. You can always count on a fair price, high quality products, and quick delivery. Keep up the great work guys, will definitely continue to shop with you
EA
Eric Ahonen Mar 24, 2021
Google
Awesome control arms! My mechanic said “ your Jeep is pretty much bulletproof now.” And I just got the tier 1 arms! The people at the core 4x4 shop were really nice too. They were running behind on shipping, (which is understandable) so I decided to go pick it up because it was only an hour drive. They gave me a free $60 hardware kit for the inconvenience. Thanks core 4x4! You guys are awesome!!
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!
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