Optimize Suspension Geometry for Lifts From 0 to 6 Inches
Take your Jeep Wrangler JL’s suspension to the next level with the Crawl Series Front Upper Control Arms (CRL-J-JL-FU2). Designed to pair with Crawl Series Front Lower Control Arms for lifts over 3 inches, these upper control arms ensure precise suspension geometry, improving axle alignment, drivability, and off-road articulation. While not necessary for smaller lifts, these control arms are essential for maintaining proper performance and stability on Jeeps with significant suspension modifications.
What's Included in the Kit
- Crawl Series Front Upper Control Arms (CRL-J-JL-FU2)
Key Features and Benefits
- Essential for Lifts Over 3 Inches – Designed to work in harmony with Crawl Series Front Lower Control Arms, these upper control arms provide the necessary adjustments to correct overall suspension geometry for larger lifts.
- Heavy-Duty Construction – Crafted from robust 1.5” OD DOM Tubing with a 5/16” wall thickness, these control arms offer the strength and durability needed to withstand extreme off-road conditions and heavy-duty use.
- Johnny Joints for Superior Flexibility – Featuring a Johnny Joint at the adjusting end and a U-bracket at the axle end, these arms allow smooth, bind-free articulation for enhanced off-road performance.
- Fully Adjustable for Suspension Tuning – Tailored for lifts from 0 to 6 inches, these arms enable precise alignment and axle positioning when paired with lower control arms, ensuring optimal handling and stability for Jeeps with larger lifts.
Two-Stage Powder Coating
Each Front Upper Control Arm is finished with a rigorous two-stage powder coating process. The zinc primer base provides exceptional corrosion resistance, while the topcoat—available in 10 customizable colors—adds additional protection and a stylish finish to match your Jeep’s look.
Made in the USA
Proudly manufactured in Orem, UT, the Crawl Series Front Upper Control Arms reflect CORE 4X4’s dedication to American craftsmanship. By managing production in-house, we maintain the highest standards of quality and support local industries while offering competitive pricing.
Optional Hardware Upgrade
Installation is straightforward using factory hardware. For vehicles with rusted or stubborn bolts, optional Grade 8 hardware kits are available separately to make the process seamless and hassle-free.
In Conclusion
The Crawl Series Front Upper Control Arms (CRL-J-JL-FU2) are the perfect upgrade for Jeep JL owners with lifts over 3 inches, delivering precise suspension geometry adjustments when paired with Crawl Series Front Lower Control Arms. With premium materials, superior adjustability, and seamless integration into your Jeep’s suspension system, these control arms ensure enhanced stability, articulation, and drivability. Invest in CORE 4X4’s American-made engineering today for unmatched performance both on and off the trail.
Vehicle Fitment: Jeep Wrangler JL 18+ – Corrects suspension geometry and enhances drivability for lifted and off-road setups.
CORE Advantage: Essential for lifts over 3”, providing precise pinion angle correction and improved axle alignment when paired with lower control arms.
Adjustability: Fully adjustable for 0–6” lifts, allowing fine-tuned suspension tuning to optimize handling, stability, and drivetrain performance.
Construction: Built from 1.5” OD DOM tubing with a 5/16” wall, featuring a Johnny Joint at the adjusting end and a U-bracket for secure axle mounting.
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 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.
| Make | Model | Submodel | Years |
|---|---|---|---|
| Jeep | Wrangler | 2018 - Present |
Each rebuild kit includes all necessary components to replace and restore wearable parts.
| 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 Upper, Front |
| Mounting Style | Bolt-On |
Select your lift size in Step 1 — the kit ships with the correct geometry for that height. If you're running a non-standard setup, call us before ordering and we'll confirm compatibility.
Death wobble is a geometry problem, not just worn parts. Cruise Series corrects caster angle and eliminates the flex points that let shimmy start. Replacing one part at a time delays the fix — this replaces the geometry.
Yes, if you've done a lift kit before. Full-day project. Watch the complete JT install walkthrough on our YouTube channel — most owners wrap it in a day. Any off-road shop can run it if you'd rather have it done.
Any non-wear component fails — we replace it. No mileage cap. No maintenance intervals to track. No fine print about voiding if you miss a service. Lifetime means lifetime.
Teraflex's lifetime warranty voids if you miss a maintenance interval. MetalCloak's actual parts warranty is 12 months — their "lifetime" language refers to their service program. No conditions here.
See It Installed
Install videos and build guides on our YouTube channel.
Watch more installs on YouTube
Reviews from Google
Accessories & Add-ons
Jeep Wrangler JK / JKU 07-18 10pc Camp Series Adjustable Control Arm, Track Bar Kit
$ 1,658.95
Jeep Wrangler JL / JLU 18+ 8pc Crawl Series Adjustable Control Arm Kit
$ 1,585.45
Jeep Wrangler JL / JLU 18+ 2pc Crawl Series Front Lower Adjustable Control Arms
$ 503.95
Jeep Wrangler JL / JLU 18+ 4pc Crawl Series Front Adjustable Control Arm Kit
$ 766.45
Jeep Wrangler JL / JLU 18+ 12pc Crawl Series Adjustable Control Arm, Track Bar, Steering Kit
$ 3,202.45
Jeep Wrangler JL / JLU 18+ 16pc Crawl Series Adjustable Control Arm, Track Bar, Steering, End Link Kit
$ 3,727.45