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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

251.95 251.95 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.
8
89Patriot Jan 22, 2026
Google
Great company! I have used there products consistently with no complaints with quality you can see and feel. From my experience, their customer service is also amazing. Core 4x4 has no issues standing behind their already amazing products and will quickly and professionally solve issues may they arise. I will continue to be a customer.
BW
Brian Wadsworth Jun 26, 2025
Google
Amazing product! Shipping was quick, packaging was great and support was outstanding!!
TG
Travis Grimm Mar 23, 2024
Google
To start off if you're looking to upgrade your control arms definitely hit this company up. Great product, easy install of the product, with three different tiers everything is priced pretty good, I'm a sticker guy and they sent a sticker for each arm each track bar and also three extra ones so the extra are on the Jeep the advertise them for sure. If you're reading this review I highly recommend you to check their website out.
D
DSI Jul 26, 2025
Google
Great products with excellent customer service after the sale
TM
T Mac Mar 23, 2026
Google
CORE 4X4 Company produces/manufactures exceptional products. My rear upper and lower control arms and rear track bar were powder coated custom Fox “Shock Orange” for my 2024 Bronco Wildtrak. OEM looks minimal compared to the CORE 4X4 control arms. Plus they’re adjustable, serviceable and rebuildable. Shipment was very fast and packaging used custom foam wrapped around the arms and heavy duty boxes. Not even UPS could damage. Korby L. was great to work with and responded quickly with emails and product information. Great products. Great people from the State of Utah. All Made in the USA. 5 Stars!!!
JI
Jerome Segura III Jun 26, 2025
Google
I bought the 16pc Cruise Series Adjustable Control Arm, Track Bar, Steering, End Link Kit to replace a worn budget 4" lift on my used JKU. These are top quality parts; very solid. Customer service is unsurpassed. They even matched prices on my order placed before the tax day sale. I made an error in ordering a drag link flip kit; they were quick to help me fix this too. There's peace of mind knowing these components are made in the USA. Thank you. 👍👍
CT
Canon TeSelle Jun 26, 2025
Google
Great Experience. I wanted to make changes to my order and Korby was more than willing to work with me to get everything corrected. Hope to deal with these guys again in the future.
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