Why Builders Choose CORE 4X4
Warranty facts, not marketing language.
Their “lifetime” language refers to their service model. Actual parts warranty: 1 year. Ours: lifetime.
Skip a maintenance interval? Their warranty voids. Ours doesn’t.
Clayton warrants their Johnny Joints for 90 days. We cover ours for life.
Correct Your Rear Pinion Angle Eliminate Driveline Vibrations
Lifting your Jeep Wrangler JL can create driveline vibrations and excessive wear due to improper pinion angle alignment. Our Cruise Series Rear Upper Control Arms solve this issue by allowing precise pinion angle adjustments, reducing strain on your drivetrain and eliminating unwanted vibrations. Whether you're navigating the trails or cruising on the highway, these arms provide a smoother ride, better alignment, and improved durability over factory components.
What’s Included in the Kit?
- Pair of Cruise Series Rear Upper Control Arms (CRS-J-JL-RU2)
Key Features and Benefits
- Corrects Pinion Angle to Reduce Driveline Vibrations – Prevents excessive strain on driveshafts and U-joints, reducing noise and increasing drivetrain longevity.
- Heavy-Duty Steel Tubing Construction – Built for strength and durability, these arms withstand tough off-road conditions while improving on-road comfort.
- Adjustability for Lifted Vehicles – Accommodates lifts from 0 to 6 inches, ensuring proper pinion angle correction and precise alignment.
- Tapered Polyurethane Bushings for a Smoother Ride – Reduces noise, absorbs vibrations, and improves articulation compared to factory rubber bushings.
- Recommended Pairing for a Complete Rear-End Solution – For full alignment correction and rear axle centering, pair with our Cruise Series Rear Lower Control Arms (CRS-J-JL-RL2).
Two-Stage Powder Coating for Maximum Protection
Every control arm undergoes a two-stage powder coating process to protect against corrosion, rust, and road debris: Zinc Primer Base Coat – Provides a strong anti-corrosion barrier, ensuring durability in extreme conditions. Customizable Top Coat – Available in 10 different colors, allowing you to personalize your Jeep’s look while adding an extra layer of protection.
Made in the USA
Proudly manufactured in Orem, UT, we maintain full control over the production process to deliver top-tier quality and durability in every product.
Optional Hardware Upgrade
These control arms install using factory hardware, but if you're dealing with rusted or stubborn bolts, we offer optional Grade 8 hardware kits for an easier and more secure installation.
In Conclusion
Upgrading to our Cruise Series Rear Upper Control Arms eliminates driveline vibrations, improves pinion angle alignment, and enhances both on-road comfort and off-road durability. Whether you're lifting your Jeep or fine-tuning your rear suspension, these control arms deliver long-lasting performance and drivetrain stability.
Upgrade today and drive with confidence, knowing your rear suspension is dialed in with CORE 4X4's Cruise Series Rear Upper Control Arms!
| Make | Model | Submodel | Years |
|---|---|---|---|
| Jeep | Wrangler | 2018 - Present |
Each rebuild kit includes all necessary components to replace and restore wearable parts.
| Vehicle | Jeep Wrangler JL / JLU (18–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. |
| Hardware | No Hardware or Complete Kit |
| Series | Cruise Series |
See It Installed
Install videos and build guides on our YouTube channel.
Watch more installs on YouTube
Reviews from Google
Accessories & Add-ons
Specifications
| Color | Black, Blue, Charcoal, Green, LightGreen, Orange, Purple, Red, White, Yellow, Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed. |
| Hardware | No Hardware, Complete Kit |
| Vehicle | Jeep Wrangler JL / JLU (18–Present) |
| Brand | CORE 4X4 |
| Series | Cruise Series |
| Note to Core4x4: | - |
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