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392.66 392.66 USD 461.95

461.95

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Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Rear Upper Adjustable Control Arms

SKU: CRL-J-JK-RU2
Fits: 2007 - 2018 Jeep Wrangler JK / JKU Add vehicle

392.66 392.66 USD 461.95

461.95

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.
  • Series
    Cruise: daily driving and light off-road. Camp: overlanding. Crawl: aggressive rock crawling.
  • Hardware
    Choose upgraded hardware if your factory hardware is worn, damaged, or missing.
  • Lift Size
    Choose your current front lift height. Measure from center of wheel to fender if unsure.
  • 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

Achieve Superior Off-Road Performance

Enhance your Jeep Wrangler JK’s off-road capabilities with the Crawl Series Rear Upper Control Arms (CRL-J-JK-RU2). Designed for Jeep JK models (2007-2018), these control arms deliver unmatched flexibility, improved alignment, and exceptional durability. Whether tackling rugged terrain or cruising city streets, they provide the strength and adjustability needed for optimal performance.

What's Included in the Kit

  • Crawl Series Rear Upper Control Arms (CRL-J-JK-RU2)

Key Features and Benefits

  • High-Strength Construction – Crafted from 1.5" OD DOM Tubing with a 5/16” wall thickness, these control arms deliver superior durability and outperform competitor offerings.
  • Johnny Joints for Maximum Articulation – Featuring original Johnny Joints at both ends, these control arms provide unmatched flexibility and smooth operation for extreme off-road performance and on-road comfort.
  • Adjustability for Lifts – Fully adjustable to accommodate lift heights from 0 to 6 inches, allowing precise alignment corrections, pinion angle adjustments, and axle re-centering. Custom solutions are available for lifts exceeding 6 inches.
  • Seamless Suspension Integration – Designed to work seamlessly with other Crawl Series components, these control arms enhance overall suspension harmony and drivability, providing consistent and reliable performance in all conditions.

Two-Stage Powder Coating

Each control arm undergoes a rigorous two-stage powder coating process for enhanced durability and corrosion resistance. Zinc primer base protects against rust. Topcoat available in 10 customizable colors offers a durable, stylish finish that complements your Jeep’s look.

Made in the USA

Proudly designed and manufactured in Orem, UT, the Crawl Series Rear Upper Control Arms exemplify the best in American craftsmanship. By choosing CORE 4X4, you support local industries while investing in premium-quality components that meet the highest performance standards.

Optional Hardware Upgrade

Installing the Crawl Series Rear Upper Control Arms is a straightforward process using your Jeep’s factory hardware. Optional Grade 8 hardware kits are available separately for vehicles with rusted or stubborn bolts, ensuring a hassle-free setup.

In Conclusion

Upgrade your Jeep Wrangler JK with the Crawl Series Rear Upper Control Arms (CRL-J-JK-RU2) for unmatched off-road flexibility, precise alignment, and durable performance. Designed for Jeep enthusiasts who demand the best, these control arms deliver consistent results on every trail and road. Invest in quality, reliability, and the ultimate driving experience today.


Make Model Submodel Years
Jeep Wrangler 2007 - 2018

Each rebuild kit includes all necessary components to replace and restore wearable parts.

Vehicle Jeep Wrangler JK / JKU (07–18)
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 Crawl Series
Hardware No Hardware or Complete Kit
Lift Size 0" — 6" or 6"+

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.
AL
Andrew LaFave May 27, 2025
Google
I am really please with this company. Great product, i had an issue with a couple of the jonnhy joint bushings, they explained what had caused it and how to fix it. Within hrs of receiving my inquiry, i had heard back with the required info I needed. A couple hrs later problem was fixed and ready for the trail again. They care about heir product and their customers. Thanks crew, you rock
RD
Reagan D'mello Dec 23, 2025
Google
Love the product. Excellent customer support 👍🏽 …
K
Korosunagi Jul 26, 2025
Google
I broke a grease fitting off in my end link. I thought I was going to have to buy a new one. Reached out to Core 4x4 and wham! bam! They fixed it and sent it back with 2 day shipping. Got it a day early even. If they couldn't fix it they were going to send me a new one. Now that's customer service! They are now a permanent part of my garage. Thank you Core 4x4!
JS
Jeffrey Shafer Jan 22, 2026
Google
Exceptional customer service. All my questions were asked in a timely manner and parts were replaced when an error occured. I encourage people to make purchases due to their exceptional quality products, but also because of their customer service. Will make additional purchases in the future.
MT
Ma TheMeatLoaf Mar 23, 2024
Google
Their website estimated 2 days to get my parts but actually took 11. No communication to let me know what’s going on. Parts were missing. Some days they answer questions, some they don’t. Didn’t let me know I’d have to alter stock bolts to fit their parts. All around just seems like they don’t care.
JS
Jon Stempien May 27, 2025
Google
Big thanks to Corby at core 4 x 4 outstanding customer service I like to thank them or 4 x 4 for helping me Well-made product in the United States recommend core 4 x 4 for all jeep Owners that like the four wheel
BZ
Brandon Zeiders Dec 23, 2025
Google
I ordered the jeep xj long arm lift kit. Control arms showed up first they turned out amazing!! Had some issues with the powder coating on the cross member and sent korby and the team at core4x4 an email. They got right on making me another cross member and sending it out. I appreciate all the help they've given me along the way. Very fast response thru emails. Build quality seems to be pretty dang nice!! Can't wait to install it and enjoy it!
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