Why Builders Choose Core 4x4
The only aftermarket suspension brand with an X-Series product system
vs. MetalCloak
One price point, no tier options. Core 4x4 Crawl matches their performance at a better price with a better warranty.
vs. Teraflex
Skip a grease interval? Warranty voided. Core 4x4 Cruise requires zero maintenance — and our warranty covers everything.
vs. Clayton / Budget
Cheaper arms exist. But adjustable, American-made, 10 colors, lifetime guarantee, and an upgrade path? Only Core 4x4.
Heavy-Duty Performance for Maximum Strength and Versatility
Upgrade your 2021-Present RAM TRX with CORE 4X4 7075 Aluminum Rear Lower Control Arms (R-TRX-2021-AL-RL2)—the pinnacle of strength, adjustability, and durability for high-performance trucks. Built to withstand the extreme power and suspension demands of the TRX, these control arms provide exceptional handling, unmatched articulation, and extreme resilience, making them the ultimate upgrade for towing, hauling, and aggressive off-road driving. These lower control arms are engineered to handle the uncompromising power and size of the RAM TRX, ensuring a stronger, smoother, and more controlled ride in any terrain.
Key Features and Benefits
- Heavy-Duty 7075 Aluminum Construction – Crafted from massive 2.5" OD 7075 aluminum, offering unmatched strength, longevity, and weight savings.
- Rock Jock 3.0" Johnny Joints for Maximum Flex – Equipped with 1.5" threaded, greaseable, and fully rebuildable joints for superior articulation and smooth operation.
- On-Vehicle Adjustability for Precision Tuning – Machined with wrench flats for effortless axle positioning and pinion angle correction without removal.
- Optimized for High-Horsepower, High-Speed Off-Roading – Designed to handle extreme torque loads, heavy towing, and aggressive off-road terrain while maintaining precise alignment and control.
Recommended Pairing
For complete axle control, pair with Adjustable Rear Upper Control Arms (R-TRX-2021-AL-RU2) to achieve full suspension adjustability and optimal drivability.
Superior Construction for Unrivaled Durability
Our 7075 aluminum rear lower control arms are built to withstand high-speed desert running, extreme articulation, and heavy payloads without sacrificing ride quality. Featuring Rock Jock’s massive 3.0" Johnny Joints, these control arms provide:
Maximum articulation for smoother off-road suspension cycling.
Increased flexibility for maintaining precise wheel alignment under load.
Ultimate strength for improved control, tracking, and shock absorption.
Whether you're soaking up high-speed whoops, towing heavy trailers, or crawling through rugged terrain, these control arms ensure superior performance in every scenario.
Two-Stage Powder Coating for Maximum Durability
To ensure exceptional corrosion resistance and long-lasting reliability, all aluminum components undergo a two-stage powder coating process:
Zinc primer base coat for superior rust protection.
Top coat available in 10 colors to match your truck’s aesthetics and ensure maximum durability.
Proudly Made in the USA
Manufactured in Orem, UT, our CORE 4X4 7075 Aluminum Rear Lower Control Arms are built using high-quality, American-sourced materials under strict quality control standards. Supporting American manufacturing means investing in superior craftsmanship and unmatched reliability.
In Conclusion
The CORE 4X4 7075 Aluminum Rear Lower Control Arms are a premium suspension upgrade designed for RAM TRX owners who demand superior performance, maximum durability, and complete adjustability. By replacing weak factory components with 7075 aluminum control arms, you ensure greater stability, improved alignment, and long-term reliability for high-horsepower, high-speed off-road use. Upgrade today and experience the CORE 4X4 difference—because your RAM TRX deserves 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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