Fabtech 8" Radius Arm System

2008–2016 Ford F250/F350 4WD

Part #: K2128

Overview

The Fabtech 8" Radius Arm System is a comprehensive suspension upgrade designed specifically for 2008–2016 Ford F250 and F350 4WD trucks. Engineered to deliver exceptional off-road capability, improved ride height, and enhanced durability, this system is ideal for enthusiasts seeking to push their trucks beyond factory limits. Whether you're tackling rugged trails, hauling heavy loads, or simply want a commanding stance, this kit provides the performance and reliability you need.

Featuring a full tubular construction with reinforced dimple die side plates, the Fabtech Radius Arms are built to withstand the rigors of demanding off-road adventures. The system includes high-quality components such as 8-inch replacement coil springs for front lift, a relocated trac bar bracket, and rear leaf springs, all designed to work seamlessly together for a balanced, lifted ride. With this upgrade, you'll get increased ground clearance, better wheel articulation, and a commanding presence on and off the road.

Key Features

The Fabtech 8" Radius Arm System incorporates advanced engineering and premium materials to ensure long-lasting performance and superior handling. Key features include:

• Full tubular radius arms with dimple die side plates for added strength and durability, helping to resist bending and torsion during off-road use.
• Adjustable alignment cam at the axle, allowing for precise caster adjustments to optimize steering geometry and tire wear.
• 8-inch replacement coil springs designed to provide a significant lift while maintaining ride quality and load-carrying capacity.
• Relocated trac bar bracket to correct axle positioning and maintain proper track alignment after lift installation.
• Heavy-duty rear leaf springs engineered to support increased payload and maintain ride height under load.
• Included sway bar drops, U-bolt kit, and all necessary hardware for a complete, bolt-on installation.
• Made in the United States, ensuring high manufacturing standards and quality control.

Construction & Design

The Fabtech Radius Arm System is constructed from high-strength steel tubing, featuring a tubular design that offers superior resistance to bending and torsion. The dimple die side plates add extra reinforcement, ensuring the arms can withstand the stresses of off-road driving and heavy loads. The system's components are precision-engineered and CAD-designed for a perfect fit, ensuring proper alignment and optimal performance. The inclusion of adjustable cams allows for fine-tuning caster angles, which improves steering response and reduces tire wear over time. Overall, this suspension system combines rugged durability with thoughtful design to deliver a reliable upgrade for your truck.

Performance & Sound

With this suspension upgrade, your Ford F250 or F350 will experience improved ground clearance, better wheel articulation, and a more aggressive stance. The increased lift height enhances off-road capability, allowing you to navigate challenging terrain with confidence. The upgraded coil springs provide a balanced ride, combining comfort with the ability to handle heavier loads. While this system is primarily designed for off-road performance, it also contributes to a commanding visual presence on the street. Expect a noticeable improvement in handling, stability, and overall driving enjoyment.

Installation & Fitment

The Fabtech 8" Radius Arm System is a bolt-on upgrade that requires no cutting or welding for installation. The kit is designed to utilize factory mounting points and OEM components where applicable, simplifying the process. Basic mechanical skills and standard hand tools are sufficient for installation, which can typically be completed within a day. It is recommended to have a professional alignment after installation to ensure proper caster and camber settings, maximizing tire life and handling performance. No special tuning is required, and the system is engineered to provide a direct fit for your truck.

What's Included

• Full set of tubular radius arms with reinforced dimple die side plates
• 8-inch replacement coil springs for front lift
• Relocated trac bar bracket
• Rear leaf springs designed for increased load capacity
• Sway bar drop brackets
• U-bolt kit and all necessary hardware for installation
• Detailed installation instructions

Ideal For

• Off-road enthusiasts seeking increased ground clearance and wheel articulation
• Heavy-duty truck owners who require enhanced load-carrying capacity
• Ford F250/F350 owners looking to achieve an aggressive lifted stance
• Performance-minded drivers wanting a durable, reliable suspension upgrade