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

Name: Jeep Wrangler JL / JLU 18+ 2pc Crawl Series Front Lower Adjustable Control Arms
Brand: CORE 4X4
SKU: CRL-J-JL-FL2
Price: 503.95 USD
Availability: InStock

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SKU: CRL-J-JL-FL2 ★★★★★ (132 reviews)

$ 428.36 428.36 USD $ 503.95

$ 503.95

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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+ 2pc Crawl Series Front Lower Adjustable Control Arms

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COLOR 11 colors — pick yours

	Daily Confidence $216	Trail-Ready $310	Trail Domination $428
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

Solve the Jeep JL’s Caster Deficiency for Superior Drivability

The Crawl Series Front Lower Control Arms are a must-have upgrade for Jeep Wrangler JL (2018-Present) models, addressing the factory issue of insufficient caster. Designed to improve alignment and drivability, especially for lifts from 0 to 3 inches, these control arms reduce symptoms like flighty steering, road rut tracking, and unstable handling.

For lifts over 3 inches, pairing with our Crawl Series Front Upper Control Arms ensures precise alignment and enhanced performance.

Key Features and Benefits

Corrects Caster for Superior Handling – Optimized for lifts from 0 to 6 inches, these control arms move the front axle forward and increase caster, resolving flighty steering and road rut tracking for dramatically improved drivability.
Built for Strength and Durability – Constructed from heavy-duty 1.75” OD DOM Tubing with a 5/16” wall thickness, these control arms deliver unmatched strength and longevity for extreme off-road use.
Johnny Joints for Maximum Articulation – Equipped with premium Johnny Joints at both ends, these control arms provide bind-free movement, delivering exceptional off-road flexibility and smoother on-road performance.
Full Adjustability for Lifted Vehicles – Adjustable to accommodate lifts from 0 to 6 inches, these control arms allow precise alignment correction and axle re-centering. For lifts over 3 inches, pairing with Crawl Series Front Upper Control Arms ensures optimal suspension geometry.

Two-Stage Powder Coating

Every control arm undergoes a two-stage powder coating process for superior durability and corrosion resistance. Zinc primer base provides a strong foundation against rust. Durable top coat, available in 10 color options, adds an additional layer of protection and customization.

Made in the USA

Proudly designed and manufactured in Orem, UT, the Crawl Series Front Lower Control Arms reflect CORE 4X4’s dedication to American craftsmanship. By sourcing materials locally and maintaining stringent manufacturing standards, we deliver premium-quality products you can trust.

Optional Hardware Upgrade

Installing the Crawl Series Front Lower Control Arms is straightforward using factory hardware. Optional Grade 8 hardware kits are available for those dealing with rusted or stubborn bolts, ensuring a smooth and hassle-free installation process.

Designed for lifts from 0 to 3 inches—and compatible with Crawl Series Front Upper Control Arms for larger lifts—these control arms provide unmatched strength, adjustability, and drivability.

Experience the difference in handling, performance, and durability today with CORE 4X4!

Vehicle Fitment: Jeep Wrangler JL 18+ – Corrects caster angle, enhances stability, and improves drivability for lifted and off-road setups.
CORE Advantage: Moves the front axle forward and increases caster, reducing flighty steering, road rut tracking, and unstable handling.
Adjustability: Fully adjustable for 0–6” lifts, allowing precise caster correction, axle re-centering, and optimized suspension geometry.
Construction: Built from 1.75” OD DOM tubing with a 5/16” wall, engineered for maximum strength, durability, and extreme off-road 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.

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-FL2 $ 84.00

Construction & Materials

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.

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
Hardware	No Hardware or Complete Kit
Lift Size	0" — 6" or 6"+
Placement on Vehicle	Front Lower, Front
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 ★

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!

Cody Whitlock Sep 24, 2025

★ ★ ★ ★ ★

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

Matthew Handy Sep 24, 2025

★ ★ ★ ★ ★

Ran into an issue with a part that I ordered. Got ahold of them explained to them the issue I was having and they jumped in and got the issue fixed. Hands down the best customer service I have ever dealt with. The parts are hands down amazing. Highly recommend.

Aaron Mar 23, 2024

★ ★ ★ ★ ★

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!

Brandon Zeiders Dec 23, 2025

★ ★ ★ ★ ★

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!

Eric Hernandez (savagefit) May 27, 2025

★ ★ ★ ★ ★

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.

Dastrup Auto Mar 25, 2019

★ ★ ★ ★ ★

I have bought a bunch of sets of arms, track bars and even had custom work done by Core 4x4. Just yesterday, Spence and Cam delivered an awesome cross member they designed and built for me! All of their products have been exceptional! I have personally seen their progression with design changes/updates. They truly take pride in their work and products. Quality control is second to none! They’ve also helped me diagnose issues with different jeeps I’ve had, as well as Dodge/Rams. These guys know their stuff! Really! I trust them whole heartedly and absolutely love their products/quality of work! I’ve referred many people, and will always continue to do so. Keep up the good work Core4x4!

Brad C Mar 24, 2021

★ ★ ★ ★ ★

Outstanding experience! I asked Core to build me a set of custom control arms that were larger/heavier than they normally build. They gladly accepted the challenge and turned out an expertly crafted and super strong product ahead of schedule. Fit and finish are excellent. Spence and Cameron were a pleasure to work with every step of the way. And all of this for a very reasonable price. I highly recommend these guys!

Sal Torres May 27, 2025

★ ★ ★ ★ ★

upper control arms look great and went on easy.. only reason I gave 4 stars and not 5 is because of a shipping issue which put my build a week behind. The issue was resolved quickly and painlessly, great customer service. Only time will tell how control arms perform but they look great and like they will go above and beyond control arm demand.

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.

Accessories & Add-ons

8pc Kit

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

$ 1,585.45

Front Set

Jeep Wrangler JL / JLU 18+ 4pc Crawl Series Front Adjustable Control Arm Kit

$ 766.45

Front Upper Control Arms

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

$ 314.95

10pc Kit

Jeep Wrangler JL / JLU 18+ 10pc Crawl Series Adjustable Control Arm, Track Bar Kit

$ 2,047.45

12pc Kit

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

$ 3,202.45

16pc Kit

Jeep Wrangler JL / JLU 18+ 16pc Crawl Series Adjustable Control Arm, Track Bar, Steering, End Link Kit

$ 3,727.45