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Jeep Wrangler JL / JLU 18+ 4pc Cruise Series Rear Adjustable Control Arm Kit

SKU: CRS-J-JL-RS4
Fits: 2018 - Present Jeep Wrangler JL / JLU Add vehicle

524.95 524.95 USD 524.95

524.95

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

Complete Rear-End Suspension Control

Upgrade your Jeep Wrangler JL (2018-Present) with the Cruise Series Rear Control Arm Set, engineered to restore alignment, re-center the rear axle, and eliminate driveline vibrations caused by improper pinion angles.

This comprehensive rear-end solution replaces weak factory components with stronger, adjustable control arms, ensuring on-road stability and off-road durability.

What’s Included in the Kit?

  • Cruise Series Rear Upper Control Arms (CRS-J-JL-RU2)
  • Cruise Series Rear Lower Control Arms (CRS-J-JL-RL2)

Key Features and Benefits

  • Heavy-Duty Steel Tubing Construction – Built for maximum strength and durability, ensuring your suspension can handle the toughest conditions.
  • Precision Adjustability – Corrects alignment, re-centers the rear axle, and restores proper pinion angle, accommodating lifts from 0 to 6 inches.
  • Eliminates Driveline Vibrations – Adjustable upper control arms allow for precise pinion angle correction, reducing stress on the driveshaft and eliminating unwanted vibrations.
  • Tapered Polyurethane Bushings – Reduces vibration, improves articulation, and enhances ride quality over standard rubber bushings.
  • Improved Ride Stability – Addresses rear-end instability, excessive movement, and tire wear, ensuring a smoother ride on and off the road.
  • Recommended Pairing for a Complete Suspension Solution – For full rear-end alignment and handling improvements, pair with our Cruise Series Rear Track Bar (CRS-J-JL-RTB1).

Two-Stage Powder Coating for Maximum Protection

To ensure long-lasting durability, every control arm undergoes a two-stage powder coating process: Zinc Primer Base Coat – Prevents rust and corrosion, ensuring protection in harsh environments. Customizable Top Coat – Choose from 10 available colors to match your vehicle’s aesthetics and add a personal touch.

Made in the USA

Proudly manufactured in Orem, UT, our Cruise Series Rear Control Arm Set is built with the highest standards of American craftsmanship, ensuring consistent, reliable performance in all driving conditions.

Optional Hardware Upgrade

  • Our Cruise Series Rear Control Arm Set is designed for easy installation using factory hardware.
  • However, for those dealing with rusted or stubborn bolts, we offer optional Grade 8 hardware kits, available separately to ensure a secure and hassle-free installation.

In Conclusion

Choosing the Cruise Series Rear Control Arm Set means investing in a stronger, more responsive suspension that eliminates alignment issues, eliminates driveline vibrations, and enhances overall performance.

Whether you're tackling rugged trails or daily commuting, these control arms deliver the strength and adjustability your Jeep JL needs.

Upgrade today and experience better ride stability, reduced tire wear, and a vibration-free driving experience with CORE 4X4’s Cruise Series Rear Control Arm Set!


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.
MM
MIKE (Mike the Mechanic) Jul 26, 2025
Google
Amazing company and customer service!!!! I messed up on my order and the fixed it immediately. Would definitely recommend them. Can't wait to hit the trails with their product.
FS
Fernando Salazar Aug 25, 2025
Google
Great quality control arms and great customer service. Korby has been a great help at answering my questions on some issues I’ve been having with installation!
BA
bryan angell Jun 26, 2025
Google
First off amazing products. I got a set of adjustable control arms for my XJ and it is so nice to be able to dial in caster and pinion angles. A quick call and I was able to purchase an adjustable track.
P
Paul Mar 24, 2023
Google
I've been having trouble with the track bar (on my 2nd gen Dodge) since I installed the 3rd gen Synergy adapter bracket and a 3rd gen stock bar.. oddly, they call it a '3rd gen bracket' and the stock 3rd gen bar doesn't quite fit, making contact with the bracket. I had attempted to clearance the bracket but it was still making contact and I could feel it over large bumps. I reached out to a lot of companies, but Core 4x4 offered to make a custom bar for the application with adjustability and dual Johnny joints. The first pass on it didn't work but they sent me out another passenger side end that made it fit incredibly well. This was all done solely over email/descriptions/pictures/measurements. Bar is super high quality and heavy duty, made in the US by a family owned company and carries a lifetime warranty. The customer service was responsive and superb, and the price was a lot less than I expected.
JT
jacob trice Apr 27, 2025
Google
Core 4x4 has outstanding products at a fair price and unmatched customer service. When you call Korby, it's like talking with a friend. Very cool and helpul! I ordered some custom control arms, but from the wrong product line and they were super cool about returning them and upgrading to a better "Crawl" series. Only charged the difference between the two products. They paid all the return shipping and sent the uprgaded arms super quick. It was only a couple days. Awesome!! I couldn't be happier with the transaction👍🏼 Also, these control arms are stout and take a beating. I run heck out my Jeep in the rocks and desert. No problems whatsoever. Thanks Core 4x4, ya'll are welcome at my campfire anytime! Jake T. Pleasant Hill, Or.
A
Aaron Mar 23, 2024
Google
I have recently come to know Core 4x4 when I purchased a Jeep XJ and was looking for a place that had dedicated XJ suspension and components. Here is what makes them different than most other shops. All of their components are top shelf quality and they back it up if you break any of it. I was able to see their shop when I picked up an order locally and was impressed with their attention to detail and how they assemble and powder coat each part. I had an issue with a shackle and needed the threaded shaft to be shorter. I called in and talked to Kaden and he told me to come by and they would shorten it for me. When I got there, Kaden and Spencer (the owner) met me and talked about options and proceeded to make the right adjustments to fit my XJ. Told me if anything changes in the future and I need additional length, they would take care of me. So what really sets them apart from others is their Customer Service. Try calling in to any other Jeep suspension or part shop and see how they treat you. Been there - done that. Will continue to do business with Core and their team. Getting that kind of service for just a shackle has me thinking I may need to replace my JT components with Core's. Thanks Guys for being helpful good humans!
RM
R2d2 Movi78 Feb 21, 2026
Google
I’m extremely impressed with Core 4x4. The quality of their parts is outstanding — everything feels solid, well‑built, and engineered with real attention to detail. Shipping was fast and everything arrived perfectly packaged. Their customer service is just as good as their products: responsive, helpful, and genuinely committed to making sure you get exactly what you need. Overall, a top‑tier experience. I’ll definitely be buying from them again. Specially thank you Mr. Linscomb from Core 4x4. Arturo M.
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