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1,049.95 1049.95 USD 1,049.95

1,049.95

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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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  • Color
    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.

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.
JM
Jay Miller Jul 26, 2025
Google
I purchased a upper and lower set of control arms from core 4x4 they came early then expected and seem to be very nice quality I ran into a complication installing them and emailed them my question I was expecting to get the response maybe the next day because it was after hours I got a response in about a few minutes which allowed me to finish the project that day I super appreciate that, the products are good strong lifetime warranty and their customer service is top notch
SH
Shawn Hooten Apr 27, 2025
Google
Great products, shipped the next day during a big sale event. Core 4x4 gets it right and gets it done! Thank you all.
MD
Mark DiGrappa Apr 27, 2025
Google
First off: Korby, the gentleman that helped me decide on which kit to go with is EASILY the nicest, and most patient person I’ve dealt with, when ordering parts for this build. Second: the quality of the product is INSANE! These parts are so nicely fabricated, then powder coated for extra longevity, and they even offer an aluminum upgrade in some cases (which I went with, to save weight). Having said all of this, the most impressive thing was the lead time. These parts are build to order, and I literally ordered my suspension one week ago, today! Yes, they built, powder coated, packaged, shipped my suspension components (RAM 1500 Track rear trailing arm full set in 7075 aluminum, and front upper control arms), AND they arrived, all within a week! Granted, that I’m only one state away, but WOW!!! One week?! Amazing! So, in sort: excellent products, which arrived excellently packaged (no damage, an boxes not over-stuffed with heavy suspension parts; three boxes total, as opposed to one super heavy one…my back thanks you), super quickly, and customer service that ANY business would be envious of….so, if you’re in the market, absolutely go with Core 4X4!
CM
Cameron Masters Mar 24, 2023
Google
Absolutely incredible family owned business. I asked to pick up my order since I’m local and they came in on a weekend to accommodate. Had to make some adjustments to parts and took the time to make sure it was perfect. Parts are incredible quality. If you have a Jeep, do not hesitate to support this local business.
AH
Abbey Hiett Mar 25, 2019
Google
Company finally made things right
DR
David Rogers Aug 25, 2025
Google
Ive had the front adjustable control arm kit in bright green for my 1996 ZJ. Ive had the kit for about a year now and i have to say, im extremely impressed, over 1000 miles off-road and roughly 20,000 miles on the highway. These control arm kits for any vehicle built by core 4x4 are well worth the money, just be aware thereight be some minor scatches or chips from shipping ( but who should care about that if you're beating the crap out of em' they way they were built and designed for)
RP
Robin Poole Jul 26, 2025
Google
I had several questions before my purchase and Korby helped me with the correct parts to order and recommendations. Outstanding customer service and product knowledge! Can't wait to install them!
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