Upgrade Your Jeep’s Front Suspension for Superior Off-Road Capability
Take your 2018-Present Jeep Wrangler JL to the next level with the CORE 4X4 JL Front Long Arm Kit (J-JL-F-LAK4)—a high-performance suspension upgrade engineered for maximum articulation, stability, and durability. This weld-on kit completely transforms your front suspension geometry, providing a longer arc of travel for smoother suspension movement, better traction, and improved off-road performance.
Designed for serious off-roaders, this kit features extended-length control arms, precision-engineered bracketry, and industry-leading materials, ensuring unparalleled handling, strength, and reliability. Whether you're conquering technical rock crawls, high-speed desert runs, or rugged trails, this front long arm kit delivers next-level suspension performance.
What's Included?
- Front Lower Long Arms (7075 Aluminum, 2” OD) – Maximum strength and flexibility with impact-resistant memory.
- Front Upper Long Arms (7075 Aluminum, 1.5” OD) – High-strength aluminum for optimal suspension control.
- Left and Right Front Frame Brackets (3/16” Steel, Weld-On) – Engineered for maximum durability and precise suspension geometry.
- Complete Installation Hardware – High-strength bolts, nuts, and washers for a secure and reliable installation.
Key Features and Benefits
- Optimized Suspension Travel Geometry – The long arm design extends the control arm mounting points, creating a longer suspension arc for smoother articulation, better traction, and improved ride quality. Reduces axle steer and bump steer, providing superior handling across all terrains.
- Ultra-Strong 7075 Aluminum Control Arms with ‘Memory’ – Constructed from massive 2-inch and 1.5-inch 7075 aluminum, these control arms flex upon impact and return to their original shape, maintaining proper suspension geometry and long-term reliability.
- Precision-Welded 3/16” Steel Brackets for Maximum Durability – All frame brackets are laser-cut and precision-bent from 3/16” steel, ensuring an unbreakable mounting system that eliminates flex and maximizes front-end stability.
- Full-Width Axle Compatibility Steel Arm Option – For optimal tire clearance and suspension geometry, full-width axles are recommended with 7075 aluminum control arms. If retaining factory-sized axles, we offer a steel control arm option with optimized bends for proper clearance and fitment.
Weld-On Installation for a Permanent Performance Upgrade
This kit requires cutting and welding, ensuring a permanent and incredibly strong suspension system. Professional installation is recommended for best results.
Recommended Pairing
Pair this Front Long Arm Kit with our Rear Long Arm Kit (J-JL-R-LAK4) for a complete suspension transformation and maximum off-road capability.
Two-Stage Powder Coating for Maximum Durability
To ensure superior corrosion resistance and longevity, all control arms undergo a two-stage powder coating process. The first stage includes a zinc primer base coat for rust prevention. The second stage applies a durable topcoat, available in 10 colors, allowing you to customize your suspension components while ensuring long-lasting protection. Brackets are shipped in raw steel to allow for proper welding and post-installation finishing.
Proudly Made in the USA
Designed and manufactured in Orem, UT, using only the highest quality American-sourced materials. Strict quality control, rigorous testing, and precision engineering ensure every component is built to handle the toughest off-road conditions. By choosing CORE 4X4, you’re supporting American manufacturing and getting an unmatched product that delivers lasting performance.
Final Thoughts
The CORE 4X4 JL Front Long Arm Kit (J-JL-F-LAK4) is the ultimate front suspension upgrade for Jeep Wrangler JL owners looking to push their off-road performance to new heights. With extended-length control arms, precision-engineered bracketry, and 7075 aluminum’s impact-resistant memory, this kit delivers maximum articulation, axle stability, and durability.
Upgrade your Jeep Wrangler JL today with the CORE 4X4 Front Long Arm Kit and experience next-level suspension performance and ride quality—on the trail and the road!
Ideal use:
This kit is engineered for your specific vehicle and use case. See Description for lift range and application details.
Not sure which series fits your needs? Contact us for guidance.
- Alignment recommended after install.
- Install difficulty: moderate. Basic mechanical skills recommended.
- Estimated install time: 4–8 hours depending on experience.
- Some trimming may be required on factory axle mounts (front track bar). See our YouTube channel for guidance.
- Install videos and support available. Check product Description for links.
- Designed to reuse factory hardware. Upgrade available if yours is worn or missing.
| 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) |
| Color | Black or Blue or Charcoal or Green or Light Green or Orange or Purple or Red or White or Yellow or Raw Aluminum or Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed. |
| Lift Size | 6"+ or 4" — 6" |
| Brand | CORE 4X4 |
| Axle Setup | Full Width Front Axle (Aluminum Lowers) or Less than 70" axles (Bent Steel Lowers) |
