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214.16 214.16 USD 251.95

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Jeep Wrangler JL / JLU 18+ 2pc Cruise Series Rear Upper Adjustable Control Arms

SKU: CRS-J-JL-RU2
Fits: 2018 - Present Jeep Wrangler JL / JLU Add vehicle

214.16 214.16 USD 251.95

251.95

Starting at $110/mo or 0% APR with . See if you qualify

Build Your Kit

  • Vehicle
    Confirm this matches your vehicle. Use Shop by Vehicle to filter correctly.
  • Brand
  • Color
    Powder coat color for control arms and track bars. Does not affect performance.
  • Hardware
    Choose upgraded hardware if your factory hardware is worn, damaged, or missing.
  • Series
    Cruise: daily driving and light off-road. Camp: overlanding. Crawl: aggressive rock crawling.
  • Note to Core4x4:

Select Color to see price and add to cart.

4–8 hr install Moderate Alignment recommended Lifetime warranty on all non-wear items Made In USA

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
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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.
SG
Sal Giordano Sep 24, 2025
Google
I want to take the time to share my experience with Core 4x4. I have a 2004 Jeep Wrangler and was looking to upgrade some suspension parts. I went with Core 4x4 upper & lower adjustable control arms and a front adjustable track bar. Everything arrived quickly, and right out of the box I was impressed with the quality and craftsmanship. I had a few questions during installation (measurements and torque specs), and I spoke with Korby on a couple of occasions. Not only did he send me detailed instructions, but he also shared an installation video specific to the part and vehicle I was working on, something you don’t get from many companies. The control arms fit perfectly, look great, and perform exactly as I hoped. I did run into an issue with the front track bar touching the front diff. When I reached out, Korby had me send pictures and then immediately offered two solutions: his bar guy could make a different bend and send it out to me, or I could get a full refund. His response honestly blew me away. As much as I wanted to run the Core 4x4 track bar, I chose the refund. Korby sent me a prepaid shipping label right away, no hassle. My experience with Core 4x4 has been excellent. Korby was extremely understanding, communicative, and helpful every step of the way. The parts I received were high quality, and the customer service was second to none. I would absolutely recommend Core 4x4 10 out of 10 times and will be using them again. Just a great American company with awesome people who truly care about their customers. Thank you Korby, and thank you Core 4x4!
GV
Gil Valk Sep 24, 2025
Google
Excellent service, Prompt responses when needing technical assistance, Amazing looking parts that fit excellently. I would recommend them to anyone looking for suspension components. Also very well packaged when we received the shipment, which means no damage from shipping company!! We went with the Crawl Series double adjustable kit and it definitely looks killer on our build!!!
HK
Harold Kruder Mar 23, 2024
Google
I needed some parts and had to replace 1 lower control arm and their customer service is great. Helped with answering my questions and got parts shipped quickly.
DD
Dmitriy D May 27, 2025
Google
Installed rear and upper control arms and track bar on my 3rd Gen 4RUNNER to align rear axle and restore factory wheel base after 3.5" lift. Car drives better than New! Improved handling cornering and overall driving. Very solid and high quality made product. Support is outstanding. Shipping extremely fast. Thank you so much. I wish you will have something new for my car.
C
caleb Mar 24, 2022
Google
Absolutely a great company. Ordered rear lower control arms with hardware but when i got it the hardware wasn't there but they sent it out right away and got a free t-shirt! Highly recommend.
Z
Zion Sep 24, 2025
Google
Every product I have received from them has been nothing short of fantastic. Korby in Customer service went above and beyond to help me fix my own mistake. I cannot reccomend them enough.
VK
Victor Keele Sep 24, 2025
Google
Great customer service. I got my front upper and lower control arms and hardware on Friday afternoon. It didn’t come with instructions so I called Core 4X4 and they immediately e mailed me the instructions. Also, the kit I got had the spacers missing so I called. It was late Friday by thus time but they took care of the issue first thing Monday morning and I got the spacers on Tuesday. Great company.
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