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.
Equip your RAM TRX with these upper control arms and unleash its full potential—because your truck deserves only the best.
Vehicle Fitment: RAM TRX 21+ – Elevate your TRX's off-road capabilities with these high-performance rear upper control arms, providing unmatched strength, stability, and precision handling for the toughest terrains and high-speed desert racing.
CORE Advantage: Crafted from 7075 aluminum, these control arms deliver unparalleled strength, superior axle alignment, and improved suspension articulation. Designed to maintain performance under extreme off-road demands, they enhance handling while reducing stress on other suspension components.
Adjustability: Featuring left- and right-hand threaded adjusters, these control arms allow for precise axle centering and pinion angle correction on the fly, ensuring your suspension stays perfectly tuned for heavy off-roading or towing.
Construction: Built with 2.5” OD 7075 aluminum and 3.0” Rock Jock Johnny Joints, these control arms offer superior durability and flexibility. A two-stage powder coating process ensures long-lasting protection against corrosion, all while maintaining a premium, customizable finish.
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 Upper control arms built with 2.5” 7075 Aluminum. Forged Johnny Joints used on both adjustable ends with 1.5” x 12 TPI - 3.67” long threads.
| Make | Model | Submodel | Years |
|---|---|---|---|
| Ram | TRX | 2021 - 2024 |
Construction & Materials
Rear Upper control arms built with 2.5” 7075 Aluminum. Forged Johnny Joints used on both adjustable ends with 1.5” x 12 TPI - 3.67” long threads.
| 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. |
| Placement on Vehicle | Rear Upper, 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.
Reviews of Core 4x4
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. |
| Vehicle | Ram TRX (21–24) |
| Brand | CORE 4X4 |
| Note to Core4x4: | - |
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