Fabtech 4" Radius Arm System

2008–2016 Ford F250/F350 4WD

Part #: K2211DL

Overview

The Fabtech 4" Radius Arm System is a comprehensive suspension upgrade designed specifically for Ford F250 and F350 4WD trucks from 2008 to 2016. Engineered to enhance off-road capability, improve ride quality, and support larger tires, this system provides a significant lift while maintaining factory-like handling and durability. Whether you're a serious off-roader, a towing enthusiast, or looking to improve your truck's stance and performance, this kit offers a reliable solution that combines strength, versatility, and ease of installation.

Designed with the enthusiast in mind, the Fabtech Radius Arm System features a full tubular structure reinforced with dimple die side plates for increased strength and durability. The system includes everything needed to elevate your truck's performance and appearance, making it an ideal upgrade for those seeking improved ground clearance, better wheel articulation, and a commanding presence on and off the road. With a focus on quality and precision, this kit helps support your vehicle's increased load capacity and off-road demands while ensuring a smooth, controlled ride on the highway.

Key Features

The Fabtech Radius Arm System incorporates advanced engineering and high-quality materials to deliver superior performance and longevity. Key features include:

• Full tubular radius arms with dimple die side plates for enhanced strength and rigidity, ensuring durability under demanding off-road conditions.
• Adjustable alignment cam at the axle, allowing precise caster adjustment to optimize steering geometry and tire wear.
• Complete coil spring replacement with heavy-duty coils designed to support the added lift and maintain ride comfort.
• Piman arm, sway bar drops, and a rear block & U-bolt kit included to restore factory handling and alignment after lift installation.
• Includes Dirt Logic front and rear shocks, engineered for improved damping, off-road articulation, and ride quality.
• Designed for easy bolt-on installation with no welding required, although drilling of six holes is necessary for proper fitment.
• Estimated installation time of 6-7 hours, making it suitable for DIY enthusiasts and professional installers alike.

Construction & Design

The Fabtech Radius Arm System is built with high-strength steel tubing, ensuring maximum durability and resistance to bending or fatigue. The tubular radius arms are precision-crafted with dimple die side plates, which reinforce critical stress points and provide a robust framework capable of handling off-road impacts and heavy loads. The system's components are engineered with CAD software to ensure precise fitment and optimal geometry, resulting in improved handling, steering response, and tire clearance.

The included Dirt Logic shocks feature a monotube design with high-quality seals and damping valving, delivering consistent performance across a variety of terrains. The coil springs are engineered to provide a balanced ride height and support increased load capacity, while the sway bar drops and rear block & U-bolt kit restore factory handling characteristics and alignment geometry after lifting. Overall, the design emphasizes strength, ease of installation, and long-term reliability.

Performance & Sound

This suspension system significantly improves off-road capability by increasing ground clearance and wheel travel, allowing your Ford F250/F350 to tackle rough terrain with confidence. The upgraded shocks provide better damping control, reducing body roll and enhancing stability during spirited driving or heavy-duty use. While this kit does not explicitly claim horsepower or torque gains, the improved suspension geometry and increased clearance contribute to better overall vehicle performance and handling. The system maintains a factory-like ride quality on paved roads while offering enhanced articulation and durability off-road.

Installation & Fitment

The Fabtech 4" Radius Arm System is designed as a bolt-on upgrade that requires no welding, making it accessible for experienced DIY enthusiasts and professional installers. Installation involves drilling six holes for proper mounting and alignment, but no cutting or major modifications are necessary. The process typically takes approximately 6-7 hours, depending on your experience and tools available. Proper alignment is recommended after installation to ensure optimal handling and tire wear. The system is engineered to fit seamlessly with your existing factory components, providing a reliable and straightforward upgrade path.

• Includes all necessary components for a complete installation, such as radius arms, coil springs, shocks, sway bar drops, rear block & U-bolt kit, and hardware.

What's Included

• Full set of tubular radius arms with dimple die reinforcement
• Replacement coil springs
• Dirt Logic front and rear shocks
• Piman arm and sway bar drop brackets
• Rear block and U-bolt kit
• All necessary mounting hardware and instructions

Ideal For

This suspension lift kit is perfect for Ford F250 and F350 owners seeking to improve off-road performance, increase ground clearance, and enhance the vehicle's stance. It's suitable for off-road adventures, towing, and daily driving where durability and reliability are paramount. Whether you're upgrading for aesthetics or functional performance, this system provides a solid foundation for your truck's transformation.

Emissions Note

This product is designed to meet or exceed industry standards for off-road use. Please note that modifications to your vehicle's suspension may affect emissions compliance. Check local regulations before installation. This kit is intended for off-road use only and is not street-legal in all areas.