Peak Performance On and Off-Road
Enhance your Jeep Wrangler TJ LJ (1997-2006) with our Crawl Series Front Upper Control Arms. Delivering exceptional off-road flexibility and maintaining smooth on-road manners, these control arms provide a crucial upgrade for Jeep enthusiasts seeking superior handling and performance in any terrain.
What’s Included:
- Crawl Series Front Upper Control Arms (CRL-J-TJLJ-FU2)
Key Features and Benefits:
- Exceptional Off-Road Flexibility – Equipped with Johnny Joints from Rock Jock 4x4 at the adjusting end, these control arms deliver unmatched articulation for conquering rough trails and rocky terrains.
- Robust Construction for Maximum Durability – Made from 1.5" OD DOM Tubing with a 5/16” wall thickness, these control arms are engineered to withstand the harshest conditions while ensuring long-lasting performance.
- Precise Suspension Adjustability – Designed to accommodate lifts from 0 to 6 inches, these control arms allow you to fine-tune your alignment, re-center the axle, and achieve optimal suspension geometry for improved handling.
- Recommended Pairing for Complete Front-End Performance – Pair these upper control arms with Crawl Series Front Lower Control Arms to fully dial in your alignment and maximize axle control for a balanced and high-performing front end.
Engineered for Durability and Performance
Our Front Upper Control Arms stand out with their innovative design and top-quality construction. The U-bracket at the axle end integrates seamlessly with factory bushings, while the Johnny Joint at the adjusting end enhances articulation and flexibility. This combination ensures a smoother ride, improved control, and longer-lasting durability under all driving conditions.
Two-Stage Powder Coating for Enhanced Protection
Every Crawl Series Front Upper Control Arm is treated with a two-stage powder coating process for superior corrosion resistance and durability. A zinc primer base coat forms a solid foundation to combat rust, while the top coat, available in 10 color options, provides an extra layer of protection and customization for your vehicle.
Proudly Made in the USA
Manufactured at our facility in Orem, UT, the Crawl Series Front Upper Control Arms represent the highest standards of American craftsmanship. By choosing this product, you’re supporting local manufacturing and receiving a product built with precision and care.
Optional Hardware Upgrade
Our control arms are designed for straightforward installation using factory hardware, minimizing downtime and effort. For rusted or stubborn bolts, optional new Grade 8 hardware kits are available separately to ensure a seamless and secure installation.
Vehicle Fitment: Jeep Wrangler TJ LJ 97-06 – Engineered to improve axle alignment, handling, and off-road articulation, these upper control arms refine suspension geometry for precise drivability across all terrains.
CORE Advantage: Equipped with a Johnny Joint at the adjusting end, these control arms provide superior articulation, eliminating binding while maintaining smooth operation for better control on rocky trails and uneven terrain.
Adjustability: Designed for lifts from 0 to 6 inches, these arms allow fine-tuned pinion angle correction and axle positioning, improving stability, reducing driveline vibrations, and optimizing suspension geometry for all setups.
Construction: Built from 1.5” OD DOM tubing with a 5/16” wall thickness, these arms are paired with a U-bracket at the axle end, integrating with factory bushings for unmatched durability, flex, and long-lasting 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 Upper control arm built with 1.5” OD 5/16” Wall DOM. Welded U-bracket on the fixed 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 | 1997 - 2006 | |
| Jeep | Wrangler | 2004 - 2006 |
Each rebuild kit includes all necessary components to replace and restore wearable parts.
Construction & Materials
Front Upper control arm built with 1.5” OD 5/16” Wall DOM. Welded U-bracket on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14” TPI - 2.32” long threads.
| Vehicle | Jeep Wrangler TJ (97–06) or Jeep Wrangler LJ (04–06) |
| 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 |
| Adjustment Type | Single Threaded or Double Threaded |
| Placement on Vehicle | Front Upper, 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
Accessories & Add-ons
Jeep Wrangler TJ 97-06 LJ 04-06 8pc Crawl Series Adjustable Control Arm Kit
$ 1,496.20
Jeep Wrangler TJ 97-06 LJ 04-06 2pc Crawl Series Front Lower Adjustable Control Arms
$ 467.20
Jeep Wrangler TJ 97-06 LJ 04-06 4pc Crawl Series Front Adjustable Control Arm Kit
$ 713.95
Jeep Wrangler TJ 97-06 LJ 04-06 10pc Crawl Series Adjustable Control Arm, Track Bar Kit
$ 1,942.45
Jeep Wrangler TJ 97-06 LJ 04-06 12pc Crawl Series Adjustable Control Arm, Track Bar, Steering Kit
$ 2,572.45Specifications
| Vehicle | Jeep Wrangler TJ (97–06), Jeep Wrangler LJ (04–06) |
| Color | Black, Blue, Charcoal, Green, LightGreen, Orange, Purple, Red, White, Yellow, Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed. |
| Lift Size | 0" — 6", 6"+ |
| Hardware | No Hardware, Complete Kit |
| Adjustment Type | Single Threaded, Double Threaded |
| Brand | CORE 4X4 |
| Series | Crawl Series |
| Note to Core4x4: | - |
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