Transform Your Jeep’s Front Suspension for Maximum Off-Road Dominance
Take your 2007-2018 Jeep Wrangler JK to the next level with the CORE 4X4 JK Front Long Arm Kit (J-JK-F-LAK4)—a massive suspension upgrade that enhances articulation, ride quality, axle stability, and durability. This weld-on kit completely redefines your front 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 front long arm kit provides unparalleled handling and durability.
What's Included?
- Front Lower Long Arms (7075 Aluminum, 2” OD) – Maximum strength and flexibility with impact-resistant memory.
- Front Upper Long Arms (Steel, 1.5” DOM with Frame Clearance Bend) – Designed for precise fitment with necessary bends for frame clearance, ensuring proper suspension cycling.
- 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 true long arm design extends the control arm mounting points, allowing for a longer arc of suspension travel. Reduces axle steer and bump steer, improving both high-speed stability and low-speed crawling performance. Allows for a smoother ride, better flex, and superior traction across all terrains.
- Ultra-Strong 7075 Aluminum Lower Control Arms Reinforced Steel Upper Control Arms – Front Lower Long Arms are constructed from massive 2-inch 7075 aluminum, offering a perfect blend of lightweight durability and flexibility. Front Upper Long Arms are made from 1.5-inch DOM steel with a frame clearance bend, ensuring maximum articulation without interference and proper suspension cycling. The ‘memory’ of 7075 aluminum means that when impacted off-road, the arms flex 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 – All frame brackets are laser-cut and precision-bent from 3/16” steel, delivering an unbreakable mounting system that eliminates flex and provides rock-solid stability.
- Full-Width Axle Compatibility Steel Arm Option – For optimal tire clearance and improved suspension geometry, full-width axles are recommended with 7075 aluminum control arms. For those retaining factory-sized axles, we offer a steel control arm option with optimized bends to ensure proper clearance and fitment.
Weld-On Installation for a Permanent Performance Upgrade
This kit requires cutting and welding for installation, ensuring a permanent and incredibly strong suspension system. Professional installation is recommended for the best results.
Recommended Pairing
For a complete long arm suspension solution, pair this Front Long Arm Kit with our Rear Long Arm Kit (J-JK-R-LAK4) for full axle control, maximum stability, and improved handling across all terrains.
Two-Stage Powder Coating for Maximum Durability
To enhance corrosion resistance and customization, 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
At CORE 4X4, we manufacture our Long Arm Kits in Orem, UT, using only the highest quality American-sourced materials. Our commitment to strict quality control, rigorous testing, and precision engineering ensures 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 JK Front Long Arm Kit (J-JK-F-LAK4) is the ultimate front suspension upgrade for Jeep Wrangler JK 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 JK 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 | 2007 - 2018 |
Each rebuild kit includes all necessary components to replace and restore wearable parts.
| Vehicle | Jeep Wrangler JK / JKU (07–18) |
| 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) |
