Precision Control for Pinion Angle Rear Axle Alignment
Maximize your Ram 1500’s performance with the Trail Series Adjustable Rear Upper Control Arms, engineered to fine-tune rear axle alignment and pinion angle adjustments. Designed to work in conjunction with our lower rear control arms, this setup ensures maximum traction, stability, and drivetrain efficiency across all terrains—from highways to rugged off-road trails.
What’s Included?
Trail Series Adjustable Rear Upper Control Arms (TRL-R-15-2009-RU2)
Key Features Benefits
- Heavy-Duty DOM Tubing Construction – Built from 1.75" OD, .313" wall DOM tubing for exceptional strength and durability.
- Polyurethane Johnny Joint Combo – Features high-grade polyurethane bushings at the fixed ends for reduced NVH (Noise, Vibration, and Harshness) and Rock Jock Johnny Joints at the adjustable ends for maximum articulation and flexibility.
- Pinion Angle Adjustment for Driveline Efficiency – Adjustable to correct pinion angle, reducing driveline vibrations and premature wear for a smoother power transfer and extended drivetrain life.
- Recommended Pairing – For complete rear suspension control, pair with Trail Series Adjustable Rear Lower Control Arms (TRL-R-15-2009-RL2) to eliminate wheel hop, optimize suspension geometry, and maintain proper axle alignment.
Eliminate Driveline Vibration Improve Rear Suspension Control
Factory upper control arms lack adjustability, making pinion angle corrections impossible after lifting or lowering your truck. By installing adjustable upper control arms, you eliminate vibration-causing misalignment, ensuring smooth acceleration, extended U-joint life, and optimal drivetrain efficiency. When paired with adjustable lower control arms, you gain full control over axle positioning, reducing suspension flex and eliminating wheel hop.
Highly Durable Two-Stage Powder Coating
- Zinc primer base coat for maximum rust resistance
- Durable topcoat available in 10 color options for a customized look
Optional Hardware Upgrade
Designed for installation using factory hardware, but for enhanced durability and a secure installation, we offer an optional Grade 8 hardware kit (sold separately).
Proudly Made in the USA
Manufactured in Orem, UT, every CORE 4X4 component meets strict quality control standards for precision, strength, and long-term durability.
Final Thoughts
The Trail Series Adjustable Rear Upper Control Arms are a must-have upgrade for lifted or lowered Ram 1500 owners looking for driveline stability, reduced vibration, and enhanced suspension control. Pairing these with adjustable lower control arms provides total control over axle alignment, ensuring your truck stays planted and smooth under all conditions.
Upgrade today and take full control of your suspension and drivetrain performance!
Ideal use:
This kit is engineered for your specific vehicle and use case. See Description for lift range and application details.
Not sure which series fits your needs? Contact us for guidance.
- Alignment recommended after install.
- Install difficulty: moderate. Basic mechanical skills recommended.
- Estimated install time: 4–8 hours depending on experience.
- Some trimming may be required on factory axle mounts (front track bar). See our YouTube channel for guidance.
- Install videos and support available. Check product Description for links.
- Designed to reuse factory hardware. Upgrade available if yours is worn or missing.
| Make | Model | Submodel | Years |
|---|---|---|---|
| Ram | 1500 | 2009 - Present |
Each rebuild kit includes all necessary components to replace and restore wearable parts.
| Vehicle | Ram 1500 (09–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 Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed. |
| Series | Trail Series |
| Lift Size | 0" — 6" or 6"+ or -6" — -1" |
| Hardware | No Hardware or Complete Kit |
| Factory Air Ride | No or Yes |
| Year Range | 09+ |
See It Installed
Install videos and build guides on our YouTube channel.
Watch more installs on YouTube
Reviews from Google
Not Sure Which Tier? Compare All Three.
Same American steel. Same warranty. Same quality. Choose by how you use your vehicle.
| TOWN | TRAIL VIEWING | TRACK | |
|---|---|---|---|
| Tagline | "Street Smart" | "Trail Capable" | "Maximum Articulation" |
| Joint Type | Polyurethane Bushings | Johnny Joint (Single) | Full Articulation Bar |
| Articulation | ~30% | ~65% | ~95% |
| Tubing | 1.625" OD / 3/16" Wall DOM | 1.75" OD / 5/16" Wall DOM | 1.75" OD / 5/16" Wall DOM |
| Price | $245 | $317 | $449 |
| Maintenance | Zero | Periodic grease | Periodic grease |
| Best For | Daily driving, light duty | Off-road capable, weekend trails | Competition, extreme articulation |
| Warranty | Lifetime ✓ | Lifetime ✓ | Lifetime ✓ |
Why Builders Choose Core 4x4
The only aftermarket suspension brand with a tiered 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.
Accessories & Add-ons
Ram 1500 09+ 5pc Trail Series Rear Adjustable Control Arms, Panhard/Track Bar Kit
$ 997.45
Ram 1500 09+ 7pc Trail Series Rear Adjustable Control Arm, Track Bar, End Link Kit
$ 1,154.95
Ram 1500 09+ 2pc Trail Series Rear Lower Adjustable Control Arms
$ 398.95
Ram 1500 09+ 4pc Trail Series Rear Adjustable Control Arm Kit
$ 713.95
