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763.05 763.05 USD 897.70

897.70

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Jeep Wrangler JK / JKU 07-18 4pc Crawl Series Rear Adjustable Control Arm Kit

SKU: CRL-J-JK-RS4
Fits: 2007 - 2018 Jeep Wrangler JK / JKU Add vehicle

763.05 763.05 USD 897.70

897.70

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

Unmatched Flexibility and Durability

Upgrade your Jeep Wrangler JK’s suspension system with the Crawl Series Rear Control Arms Set (CRL-J-JK-RS4). Designed for superior off-road performance and reliable on-road handling, this set includes two upper (CRL-J-JK-RU2) and two lower (CRL-J-JK-RL2) control arms. Engineered for strength, flexibility, and durability, this set delivers the ultimate suspension upgrade for Jeep enthusiasts who demand the best.

What's Included in the Kit

  • Crawl Series Rear Upper Control Arms (CRL-J-JK-RU2)
  • Crawl Series Rear Lower Control Arms (CRL-J-JK-RL2)

Key Features and Benefits

  • Heavy-Duty Construction – The upper control arms are built from 1.5” OD x 5/16” DOM Tubing, while the lower control arms feature massive 1.75” OD x 5/16” DOM Tubing. These materials ensure exceptional strength and durability, outperforming stock and aftermarket alternatives.
  • Johnny Joints for Maximum Articulation – All control arms are equipped with original Johnny Joints at both ends, delivering extreme off-road flexibility and superior ride quality on-road.
  • Adjustability for Lifted Jeeps – Fully adjustable to accommodate suspension lifts from 0 to 6 inches, enabling precise alignment, axle centering, and suspension geometry optimization. For lifts beyond 6 inches, custom options are available upon request.
  • Complete Suspension Harmony – Designed to work seamlessly as part of the Crawl Series system, these control arms integrate flawlessly with other Crawl Series components, creating a cohesive suspension setup that enhances overall performance and drivability both on and off the trail.

Two-Stage Powder Coating

Every control arm is treated with a durable two-stage powder coating process for enhanced resistance to rust and corrosion. The zinc primer base ensures a strong protective layer, while the topcoat, available in a range of 10 colors, adds durability and customization options for your Jeep.

Made in the USA

The Crawl Series Rear Control Arms Set is proudly designed and manufactured in the USA. By choosing this product, you’re supporting American craftsmanship and investing in premium quality components that stand the test of time.

Optional Hardware Upgrade

  • Installation is straightforward using your Jeep’s factory hardware.
  • For vehicles with rusted or stubborn bolts, optional Grade 8 hardware kits are available to ensure a smooth installation process.

In Conclusion

Choose the Crawl Series Rear Control Arms Set (CRL-J-JK-RS4) to elevate your Jeep Wrangler JK’s suspension performance. With heavy-duty construction, premium Johnny Joints, and full adjustability, this set delivers unmatched off-road flexibility and reliable on-road handling. Designed for Jeep enthusiasts who demand the best, this set offers durability, precision, and American-made quality. Upgrade your suspension system today and conquer any terrain with confidence.

 

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.
GH
Gary Haag Aug 25, 2025
Google
Ordered a set of Core 4x4 control arms for my 2006 Jeep TJ. These are some heavy duty quality control arms. Can't wait to get them installed. Great customer service too!
MH
mark hinz Mar 2, 2026
Google
Went above and beyond to get the parts we needed to complete our customers build for Moab Easter safari cant thank you enough for all your hard work and efforts Thank you and look forward to working with you in the near future
N
Nick Sep 24, 2025
Google
I have a 2016 RAM 1500 Crew Cab and I replaced the rear upper and lower control arms also the pan hard track bar and also the sway bar and links for the rear with all I had the articulating bushings. The vehicle now has no body role. They are absolutely incredible if you get the control arms you gotta get the CORE 4 x 4sway bar end links don’t don’t try and be cheap and get Moog or something else you got to get articulating bushings get the core 4 x 4 ones they are the best. My truck drives now through the canyons like a BMW. I have Fox high-performance shocks on there as well with all the CORE 4 x 4 suspension parts and they are amazing. Well worth the money I would highly recommend anybody thinking about CORE 4 x 4 go with CORE 4X4 and if you can go with their articulating bushings, they’re unbelievable drives better now than my Escalades. Well planted no body role and smooth on the Highway unbelievable the difference they all made!! THANKS AGAIN CORE 4x4!!!!
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.
JJ
JT JT Dec 23, 2025
Google
We have all shopped places where the person on the phone makes you feel like they don't have the time to talk to you the customer or answer your questions. I can tell you first hand that's not Core 4x4. They have the best customer service I have seen so far. They have taken the time to respond to all of my questions in a very prompt and professional manner, taking the time to answer each and every question I have had. Lets put it this way if Core 4x4 sells a product I am wanting for my truck I will buy it from them, I highly recommend Core 4x4.
DS
Dana Smith Jul 26, 2025
Google
Excellent, strong, and durable products—perfect for both on-road and off-road applications. The customer service is outstanding—friendly, knowledgeable, and extremely helpful with understanding installation and ensuring I got exactly what I needed. I would definitely order again. Top-notch company with high-quality products made right here in the U.S.A.
AP
Ajay Paynter Mar 9, 2026
Google
Great company, who worked with me on shipping parts, to arrive in time for a show, when I explained my concern of possibly not getting the control arms in time. Quality is amazing on the part, affordable price for what you get, and the powdercoat is top notch, not a single issue with this product, would buy again.
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