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392.66 392.66 USD 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.
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
SH
Shawn Hooten Apr 27, 2025
Google
Great products, shipped the next day during a big sale event. Core 4x4 gets it right and gets it done! Thank you all.
DT
Dean Tk421 Feb 21, 2026
Google
I purchased the Jeep WJ control arms Camp series over a year ago. Very pleased and impressed. Easy installation and solid build. Bracket broke for rear upper control arm, they redesigned it to be more robust and sent me a new one with hardware, honoring their guarantee!
NP
Norb Pranger Oct 24, 2025
Google
Not sure where to start, Products or Service or Warranty. Products: I found Core4x4 through a very respected YouTuber in the Jeeping community. I purchased an entire set of Core4x4 Control Arms three years ago and have beat the daylights out of them and they are still in great condition. Now, I purchased another Jeep, this time for my daughter and bought yet another set of Control Arms because I know that these things can take a beating and stand up to it. I plan on replacing more parts on this TJ and my JL and will continue to buy from Core4x4. Service: This isn't some huge name conglomerate that treats you like you're just another customer. They are quick with responses and will always make things right should something be a problem. Oh and the quickness in which they ship their products is unmatched. I bought these CAs for my TJ on Thursday, I received them on Monday. Most other manufacturers will tell you weeks, they had them to me in 2 shipping days. Warranty: Seriously, a lifetime warranty? Yes please. Nothing more to say. I can't say enough about how great of a company this is. I've even spoken to the owner through email a few years back on some questions that I had. Support small American built businesses. P.S. Core 4x4, feel free to make me an ambassador and send me some swag :) .
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!!!
MD
Mark DiGrappa Apr 27, 2025
Google
First off: Korby, the gentleman that helped me decide on which kit to go with is EASILY the nicest, and most patient person I’ve dealt with, when ordering parts for this build. Second: the quality of the product is INSANE! These parts are so nicely fabricated, then powder coated for extra longevity, and they even offer an aluminum upgrade in some cases (which I went with, to save weight). Having said all of this, the most impressive thing was the lead time. These parts are build to order, and I literally ordered my suspension one week ago, today! Yes, they built, powder coated, packaged, shipped my suspension components (RAM 1500 Track rear trailing arm full set in 7075 aluminum, and front upper control arms), AND they arrived, all within a week! Granted, that I’m only one state away, but WOW!!! One week?! Amazing! So, in sort: excellent products, which arrived excellently packaged (no damage, an boxes not over-stuffed with heavy suspension parts; three boxes total, as opposed to one super heavy one…my back thanks you), super quickly, and customer service that ANY business would be envious of….so, if you’re in the market, absolutely go with Core 4X4!
AH
Abbey Hiett Mar 25, 2019
Google
Company finally made things right
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