Jeep Wrangler JL/JLU 8pc Crawl Series Adjustable Control Arm Kit

Name: Jeep Wrangler JL / JLU 18+ 8pc Crawl Series Adjustable Control Arm Kit
Brand: CORE 4X4
SKU: CRL-J-JL-CS8
Price: 1585.45 USD
Availability: InStock

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SKU: CRL-J-JL-CS8 ★★★★★ (132 reviews)

$ 1,347.63 1347.63 USD $ 1,585.45

$ 1,585.45

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Salt Lake City, UT change

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Lifetime warranty Fitment guarantee Ships from Orem, UT 4–8 hr install

Jeep Wrangler JL / JLU 18+ 8pc Crawl Series Adjustable Control Arm Kit

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COLOR 11 colors — pick yours

	Daily Confidence $732	Trail-Ready $1,024	Trail Domination $1,347
Articulation	30°	65°	95°
Joint Type	Flex Polyurethane	Forged Johnny Joint	Forged Johnny Joint
Tubing	1.875" OD lowers / 1.625" OD uppers · 3/16" wall DOM	1.75" OD lowers / 1.50" OD uppers · 5/16" wall DOM	1.75" OD lowers / 1.50" OD uppers · 5/16" wall DOM
Maintenance	Periodic greasing	Periodic greasing	Periodic greasing
Warranty	Lifetime	Lifetime	Lifetime
	SELECT CRUISE →	SELECT CAMP →	SELECT CRAWL →

Made in USA Orem, Utah

Lifetime Guarantee Unconditional

10 Colors In-house powder coat

Fully Adjustable 0-6" of lift

3 X-Series Options Only Core 4x4

This kit includes 4 components, each built and powder-coated in-house.

Ultimate Off-Road Performance

Upgrade your Jeep Wrangler JL with the Crawl Series Complete Set of Control Arms, designed for superior flexibility and durability while maintaining excellent road manners. This 8-piece set provides unmatched strength, articulation, and adjustability, outperforming all other aftermarket options. Whether tackling rugged trails or cruising the highway, this upgrade enhances handling, axle alignment, and overall suspension geometry.

Key Features and Benefits

Heaviest tubing for upper and lower control arms – Lower control arms are constructed from 1.75” OD DOM tubing with a 5/16” wall thickness, while upper control arms use 1.5” OD DOM tubing with the same robust wall thickness for maximum durability.
Johnny Joints for superior flexibility – Each control arm is equipped with Johnny Joints at both ends for unmatched articulation and longevity. The front upper control arms feature a U-bracket at the axle end, attaching to the factory-installed bushing.
Adjustable for lift heights from 0 to 6 inches – Enables precise alignment correction, axle centering, and pinion angle optimization to eliminate driveline vibrations.
Recommended pairing – When all 8 control arms work in sync, your suspension is fully dialed in for improved handling and off-road capability.

Durable Powder Coating for Maximum Protection

Every control arm undergoes a two-stage powder coating process for superior durability and corrosion resistance. A zinc primer base coat enhances rust protection, while the top coat—available in 10 color options—provides long-lasting resilience and customization.

Proudly Made in the USA

The Crawl Series reflects the highest standards of American manufacturing. Built in Orem, UT, using locally sourced materials, every component undergoes rigorous quality control to ensure maximum strength, reliability, and longevity.

Optional Hardware Upgrade

This kit is designed for straightforward installation using factory hardware. For those dealing with rusted or stubborn bolts, optional Grade 8 hardware kits are available separately to ensure a seamless setup.

Final Thoughts

Investing in the Crawl Series Complete Control Arm Set delivers superior off-road flexibility while maintaining exceptional on-road handling. Whether you're tackling challenging terrain or refining your Jeep’s ride quality, this upgrade provides unmatched strength, adjustability, and articulation. Upgrade today and experience the ultimate suspension performance engineered for Jeep enthusiasts!

Vehicle Fitment: Jeep Wrangler JL 18+ – Delivers a complete suspension overhaul for superior handling, stability, and off-road capability.
CORE Advantage: Provides absolute control over axle positioning, pinion angle, and caster adjustments, ensuring a smooth, stable ride on any terrain.
Adjustability: Fully adjustable for 0–6” lifts, allowing fine-tuned axle re-centering, drivetrain alignment, and optimized suspension geometry.
Construction: Built from heavy-duty DOM tubing with 5/16” walls, featuring 1.75” OD lowers and 1.5” OD uppers for maximum strength and performance.
Two-Stage Powder Coating: Zinc primer base and top coat available in 10 vibrant colors protect against corrosion and allow for personalized styling of your rig.
Warranty and Origin: Proudly manufactured in the United States, our product includes a lifetime warranty on all non-wear items, providing you with confidence and peace of mind in your purchase.

Built With

Front Lower Control Arm Built With 1.75” OD 5/16” Wall DOM. Welded Johnny Joint on the fixed end and a Forged Johnny Joint on the adjustable end with 1.25” x 12 TPI - 2.625” long threads.

Front Upper Control Arm Built With 1.5” OD 5/16” Wall DOM. Welded u-bracket on the welded end and a Forged Johnny Joint on the adjustable end with 1” x 14” TPI - 2.32” long threads.

Rear Lower Control Arm Built With 1.75” OD 5/16” Wall DOM. Forged Johnny Joints on the adjustable end and a Welded Johnny Joint on the fixed end with 1.25” x 12 TPI - 2.625” long threads.

Rear Upper Control Arm Built With 1.5” OD 5/16” Wall DOM. Welded Johnny Joints on the fixed end and a Forged Johnny Joint on the adjustable end with 1” x 14” TPI - 2.32” long threads.

Make	Model	Submodel	Years
Jeep	Wrangler		2018 - Present

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

Master Rebuild kit for CRL-J-JL-CS8 $ 294.00

Master Rebuild kit for CRL-J-JL-FL2 $ 84.00

Master Rebuild kit for CRL-J-JL-RL2 $ 84.00

Master Rebuild kit for CRL-J-JL-RU2 $ 84.00

Master Rebuild kit for CRL-J-JL-FU2 $ 42.00

Construction & Materials

Jeep Wrangler JL / JLU 18+ 2pc Crawl Series Front Lower Adjustable Control Arms

Front Lower control arm built with 1.75” OD 5/16” Wall DOM. Welded Johnny Joint on the fixed end and a Forged Johnny Joint on the adjustable end with 1.25” x 12 TPI - 2.625” long threads.

Jeep Wrangler JL / JLU 18+ 2pc Crawl Series Front Upper Adjustable Control Arms

Front Upper control arm built with 1.5” OD 5/16” Wall DOM. Welded u-bracket on the welded end and a Forged Johnny Joints on the adjustable end with 1” x 14” TPI - 2.32” long threads.

Jeep Wrangler JL / JLU 18+ 2pc Crawl Series Rear Lower Adjustable Control Arms

Rear Lower control arm built with 1.75” OD 5/16” Wall DOM. Forded Johnny Joints on both adjustable ends with 1.25” x 12 TPI - 2.625” long threads.

Jeep Wrangler JL / JLU 18+ 2pc Crawl Series Rear Upper Adjustable Control Arms

Rear Upper control arms built with 1.75” OD 5/16” Wall DOM. Forged Johnny Joints on both adjustable ends with 1.25” x 12 TPI - 2.625” long threads.

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
Placement on Vehicle	Front Upper, Front Lower, Rear Upper, Rear Lower, Front, Rear
Mounting Style	Bolt-On

Use the vehicle selector on our website to shop by your year, make, and model. On product pages, use the kit builder to select your color, series, lift height, and any add-on options, then add to cart. If you need help, call or email our team.

Standard orders typically ship within 1–3 business days of ordering. Custom color orders take approximately 5–10 business days. Because everything is built in-house, we can turn orders quickly even for custom specifications.

You can reach our team through the contact form on our website, or browse to the Contact Us page. Our team is available to answer pre-sale and technical questions before and after your purchase.

Reviews of Core 4x4

See all on Google

5.0

★ ★ ★ ★ ★

132 reviews

5 ★

97%

4 ★

3 ★

2 ★

1 ★

T Mac Mar 23, 2026

★ ★ ★ ★ ★

CORE 4X4 Company produces/manufactures exceptional products. My rear upper and lower control arms and rear track bar were powder coated custom Fox “Shock Orange” for my 2024 Bronco Wildtrak. OEM looks minimal compared to the CORE 4X4 control arms. Plus they’re adjustable, serviceable and rebuildable. Shipment was very fast and packaging used custom foam wrapped around the arms and heavy duty boxes. Not even UPS could damage. Korby L. was great to work with and responded quickly with emails and product information. Great products. Great people from the State of Utah. All Made in the USA. 5 Stars!!!

Dmitriy D May 27, 2025

★ ★ ★ ★ ★

Installed rear and upper control arms and track bar on my 3rd Gen 4RUNNER to align rear axle and restore factory wheel base after 3.5" lift. Car drives better than New! Improved handling cornering and overall driving. Very solid and high quality made product. Support is outstanding. Shipping extremely fast. Thank you so much. I wish you will have something new for my car.

Leonard Smith Jan 22, 2026

★ ★ ★ ★ ★

I don’t write reviews often, but Core 4x4 absolutely earned this one. I recently ordered leaf spring mounts and realized after the fact that I messed up my order. Totally my mistake. Instead of giving me the runaround or pointing at a return policy, Core 4x4 emailed me back and forth, worked through exactly what I was doing with my build, and made sure I ended up with the correct parts. That kind of customer service is rare these days — especially in the off-road world where a lot of companies stop caring once the order is placed. The parts themselves are exactly what you hope for: solid, well-made, confidence-inspiring hardware that looks like it belongs under a vehicle that actually gets used. You can tell these are designed by people who understand suspension geometry and real-world abuse, not just CAD screenshots. Mistakes happen — especially on custom or modified builds — and Core 4x4 handled mine like pros. Fast responses, clear communication, and a genuine effort to help me get it right. If you’re on the fence: don’t be. Core 4x4 is the kind of company you want backing your build — the kind that treats customers like fellow enthusiasts, not order numbers.

Reagan D'mello Dec 23, 2025

★ ★ ★ ★ ★

Love the product. Excellent customer support 👍🏽 …

Singer Heating and Cooling Mar 25, 2018

★ ★ ★ ★ ★

These guys are great. You can get them on the phone for support. This important and is not always the case with other custom parts builders. Their control arms are bomb proof and offer plenty of options. You can get real genuine Currie Johnny joints without paying the price for Currie arms.

Abbey Hiett Mar 25, 2019

★ ★ ★ ★ ★

Company finally made things right

Sal Giordano Sep 24, 2025

★ ★ ★ ★ ★

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!

Cody Whitlock Sep 24, 2025

★ ★ ★ ★ ★

10/10 overall experience, shipping, customer service, and such a great product!

George Mar Sep 24, 2025

★ ★ ★ ★ ★

Great company. Highly satisfied with Core 4x4 customer service. Had some bushings fall apart around 600 miles from home. Called and spoke with Korby Linscomb on Thursday, late in the afternoon. He was able to get my bushings sent across country overnight at a very reasonable rate. Had me up and running by Friday evening with enough time to enjoy the Great Smoky Mountain Jeep Invasion. Thanks Guys!

Adam Oct 24, 2025

★ ★ ★ ★ ★

I couldn't have been more excited for the initial unboxing of these new Core 4x4 UCA's! They appear to be so well built and just a true quality product. Installation was a breeze and the initial testing with the forklift appears to have given me some additional flex with less binding on the rest of the components now that the geometry is back properly aligned. Time will tell how they hold up on my near future off-road adventures but I don't have any doubt that they are up to the task!

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