Jeep Wrangler JK / JKU 07-18 12pc Heavy-Duty Adjustable Long Arm Upgrade Kit

Transform Your Jeep’s Suspension for Maximum Off-Road Dominance

Take your 2007-2018 Jeep Wrangler JK to the next level with the CORE 4X4 JK Long Arm Kit (J-JK-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 in the Kit?

• Front lower long arms (7075 aluminum, 2” OD) – Maximum strength and flexibility with impact-resistant memory.
• Rear lower long arms (7075 aluminum, 2” OD) – Built for extreme off-road abuse while maintaining ride quality.
• Front upper long arms (steel, 1.5” DOM with frame clearance bend) – Designed for precise fitment with necessary bends for frame clearance.
• Rear upper long arms (7075 aluminum, 1.5” OD) – Lightweight yet incredibly strong for consistent 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

• Unmatched suspension travel geometry optimization – The true long arm design extends the control arm mounting points, allowing for a longer arc of suspension travel. This results in 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 offer a perfect blend of lightweight durability and flexibility. 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 and body mount brackets are laser-cut and precision-bent from 3/16” steel, delivering an unbreakable mounting system that eliminates flex and provides 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 – 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.

Two-Stage Powder Coating for Maximum Durability

All control arms undergo a two-stage powder coating process for enhanced corrosion resistance and customization. This process includes a zinc primer base coat to prevent rust and extend longevity, followed by a top coat available in 10 colors to match your Jeep’s aesthetics. Brackets come raw steel to ensure proper welding after installation.

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 Long Arm Kit (J-JK-C-LAK8) is the ultimate 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 Long Arm Kit and experience next-level suspension performance and ride quality, whether on the trail or the road!