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Jeep Wrangler JL / JLU 18+ 12pc Crawl Series Adjustable Control Arm, Track Bar, Steering Kit

SKU: CRL-J-JL-K12
Fits: 2018 - Present Jeep Wrangler JL / JLU Add vehicle
Add Vehicle Google 5.0 ★★★★★ (132 reviews)

$ 3,202.45 3202.45 USD $ 3,202.45

$ 3,202.45

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.
  • Lift Size
    Choose your current front lift height. Measure from center of wheel to fender if unsure.
  • Hardware
    Choose upgraded hardware if your factory hardware is worn, damaged, or missing.
  • Drag Link Orientation
    Select flipped drag link only if your steering has already been converted to over-the-knuckle.
  • Stabilizer Clamp
    Match your steering stabilizer mounting style. Standard clamp, hydraulic assist, or tie rod clamp.
  • 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

Experience Unmatched Control with Total Suspension and Steering Solutions

Elevate your Jeep Wrangler JL’s performance with the Crawl Series Complete Kit With Steering. This comprehensive upgrade offers unparalleled stability, durability, and articulation, combining complete suspension control with a heavy-duty 2.5-ton aluminum steering system. Designed to conquer the toughest trails while maintaining excellent on-road drivability, this kit delivers unmatched precision and reliability for lifted Jeeps.

What’s Included in the Kit?

  • Crawl Series Front Upper Control Arms (CRL-J-JL-FU2)
  • Crawl Series Front Lower Control Arms (CRL-J-JL-FL2)
  • Crawl Series Rear Upper Control Arms (CRL-J-JL-RU2)
  • Crawl Series Rear Lower Control Arms (CRL-J-JL-RL2)
  • Crawl Series Front Track Bar (CRL-J-JL-FTB1)
  • Crawl Series Rear Track Bar (CRL-J-JL-RTB1)
  • 2.5-Ton Heavy-Duty Aluminum Steering Kit (ST-J-JL-SK2)

Key Features and Benefits

  • Enhanced suspension geometry – Keeps axles centered, corrects pinion and caster angles, and eliminates issues like crab walking for a smoother and more controlled ride.
  • Unparalleled steering strength – The 2.5-ton aluminum steering kit, made from 2-inch 7075 aluminum, provides extreme durability with a memory feature that allows it to flex and return to its original shape after impacts.
  • Maximum off-road articulation – Johnny Joints at both ends of all control arms and track bars provide superior flexibility, ensuring bind-free movement on tough terrain without compromising strength.
  • Fully adjustable for precision tuning – Supports suspension lifts from 0 to 6 inches, allowing for fine-tuned alignment, axle re-centering, and optimized suspension geometry. Custom solutions are available for larger lifts.

Durable Two-Stage Powder Coating

Each component undergoes a zinc primer base coat for corrosion resistance, followed by a top coat available in 10 colors for a personalized look.

Optional Hardware Upgrade

Designed for straightforward installation using factory hardware, with optional Grade 8 hardware kits available separately for rusted or stubborn bolts.

Upgrade Today!

The Crawl Series Complete Kit With Steering is the ultimate upgrade for Jeep Wrangler JL owners looking to achieve perfect suspension geometry and unparalleled steering control. Combining eight adjustable control arms, front and rear track bars, and a heavy-duty aluminum steering kit, this American-made package ensures your vehicle is ready for any terrain. Invest in the Crawl Series today for superior performance, durability, and off-road articulation!


Make Model Submodel Years
Jeep Wrangler 2018 - Present

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.
Series Crawl Series
Lift Size 0" — 6" or 6"+
Hardware No Hardware or Complete Kit
Drag Link Orientation Factory Mounting (under the knuckle) or Drag Link Flip w/ Tapered Sleeve And Drill Bit (over the knuckle)
Stabilizer Clamp Standard Clamp or Hydraulic Assist Clamp

See It Installed

Install videos and build guides on our YouTube channel.

Watch more installs on YouTube
Google

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.
PB
Peter Busack May 27, 2025
★ ★ ★ ★ ★ Google
Purchased a set of Trailing arms for my Ram 1500, quality is first class. I bought the ones with the Jonny Joints for more articulation and it appears from the construction I should get a lifetime of use, Zerk fittings are an added plus. Would defiantly recommend, and the the service team answered all of my questions.
RD
Reagan D'mello Dec 23, 2025
★ ★ ★ ★ ★ Google
Love the product. Excellent customer support 👍🏽 …
EA
Eric Ahonen Mar 24, 2021
★ ★ ★ ★ ★ Google
Awesome control arms! My mechanic said “ your Jeep is pretty much bulletproof now.” And I just got the tier 1 arms! The people at the core 4x4 shop were really nice too. They were running behind on shipping, (which is understandable) so I decided to go pick it up because it was only an hour drive. They gave me a free $60 hardware kit for the inconvenience. Thanks core 4x4! You guys are awesome!!
E(
Eric Hernandez (savagefit) May 27, 2025
★ ★ ★ ★ ★ Google
The whole process was quick and painless. The products are top tier and when I reached out them for package update info, Korby Linscomb was very responsive, and got me the answers I needed the same day. Even when I emailed back to some additional info, he sent what I was looking for that same day. I love core 4x4 and will be giving them my business from now on.
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.
SG
Sal Giordano Sep 24, 2025
★ ★ ★ ★ ★ Google
I want to take the time to share my experience with Core 4x4. I have a 2004 Jeep Wrangler and was looking to upgrade some suspension parts. I went with Core 4x4 upper & lower adjustable control arms and a front adjustable track bar. Everything arrived quickly, and right out of the box I was impressed with the quality and craftsmanship. I had a few questions during installation (measurements and torque specs), and I spoke with Korby on a couple of occasions. Not only did he send me detailed instructions, but he also shared an installation video specific to the part and vehicle I was working on, something you don’t get from many companies. The control arms fit perfectly, look great, and perform exactly as I hoped. I did run into an issue with the front track bar touching the front diff. When I reached out, Korby had me send pictures and then immediately offered two solutions: his bar guy could make a different bend and send it out to me, or I could get a full refund. His response honestly blew me away. As much as I wanted to run the Core 4x4 track bar, I chose the refund. Korby sent me a prepaid shipping label right away, no hassle. My experience with Core 4x4 has been excellent. Korby was extremely understanding, communicative, and helpful every step of the way. The parts I received were high quality, and the customer service was second to none. I would absolutely recommend Core 4x4 10 out of 10 times and will be using them again. Just a great American company with awesome people who truly care about their customers. Thank you Korby, and thank you Core 4x4!
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!
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