Transform Your Jeep’s Suspension for Maximum Off-Road Dominance
Take your 2018-Present Jeep Wrangler JL to the next level with the CORE 4X4 JL Long Arm Kit (J-JL-C-LAK8)—a massive suspension upgrade that enhances articulation, ride quality, axle stability, and durability. This weld-on kit completely redefines your Jeep’s suspension geometry, delivering a longer arc of travel for smoother suspension movement, better traction, and unmatched off-road capability.
Designed for serious off-roaders, this kit features massively upgraded bracketry, extended-length control arms, and industry-leading materials for a stronger, more controlled, and more capable suspension system. Whether you're conquering extreme rock crawls, desert trails, or rugged terrain, this long arm kit provides unparalleled handling and durability.
What’s Included?
- Front Rear Lower Long Arms (7075 Aluminum, 2” OD) – Maximum strength and flexibility with impact-resistant memory.
- Front Rear 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.
- Left and Right Rear Frame Brackets with Integrated Body Mount Relocation (3/16” Steel, Weld-On) – Reinforces suspension mounting points while ensuring proper body mount positioning for maximum clearance and articulation.
- Complete Installation Hardware – High-strength bolts, nuts, and washers for a secure and reliable installation.
Key Features and Benefits
- Optimized Suspension Travel Geometry Optimization – Extends control arm mounting points for a longer arc of suspension travel, providing a smoother ride, better flex, and superior traction across all terrains. Reduces axle steer and bump steer, improving both high-speed stability and low-speed crawling performance.
- Ultra-Strong 7075 Aluminum Control Arms with ‘Memory’ – Constructed from massive 2-inch and 1.5-inch 7075 aluminum, these control arms flex under impact and return to their original shape rather than permanently bending—ensuring consistent suspension geometry and long-term reliability.
- Precision-Welded 3/16” Steel Brackets for Maximum Durability – Laser-cut and precision-bent brackets eliminate flex and provide rock-solid stability. The rear frame brackets integrate body mount relocation, eliminating interference issues while reinforcing your Jeep’s structure.
- Full-Width Axle Compatibility Steel Arm Option – Recommended for full-width axles with 7075 aluminum control arms. A steel control arm option with optimized bends is available for those retaining factory-sized axles.
- Weld-On Installation for a Permanent Performance Upgrade – Requires cutting and welding for installation, ensuring a permanent and incredibly strong suspension system. Professional installation is recommended.
Durable Powder Coating for Long-Lasting Protection
To maximize durability and corrosion resistance, all control arms undergo a two-stage powder coating process. The zinc primer base coat provides a strong foundation, protecting against rust and wear. The durable top coat, available in 10 color options, adds an extra layer of resilience while allowing you to customize your Jeep’s look. Brackets come in raw steel to ensure 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 Long Arm Kit (J-JL-C-LAK8) is the ultimate 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 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. |
| Brand | CORE 4X4 |
