Fabtech

2017–2021 Ford F250/F350 4WD Gas 6" Radius Arm System

Part #: K2256

Overview

The Fabtech 6" Radius Arm System with Coils & Performance Shocks is a comprehensive suspension upgrade designed specifically for Ford F250 and F350 trucks from 2017 to 2021 with 4WD gas engines. This system provides a significant lift height, improved off-road capability, and enhanced handling, making it ideal for enthusiasts who demand durability and performance both on and off the pavement.

Built with precision and engineered for strength, this radius arm system offers a reliable solution for those looking to increase ground clearance, accommodate larger tires, and improve overall vehicle stability. Whether you're tackling rugged trails, towing heavy loads, or upgrading your truck for better appearance and performance, this kit delivers the quality and features you need.

Key Features

Designed with durability and performance in mind, the Fabtech 6" Radius Arm System incorporates several advanced features:

• Full tubular radius arms reinforced with dimple die side plates for maximum strength and longevity.
• Adjustable alignment cam at the axle, allowing precise caster adjustments to optimize steering and handling.
• Front spring lift options include 6-inch replacement coil springs, providing a substantial lift height while maintaining ride quality.
• Includes a Trac Bar relocation bracket to ensure proper axle alignment and stability during off-road maneuvers.
• Heavy-duty Pitman arm and sway bar drop brackets to restore factory steering geometry and improve handling characteristics.
• Rear block and U-bolt kit to complete the lift and ensure proper axle positioning.
• Performance shocks included, engineered to handle the increased travel and load demands of the lifted suspension.
• Manufactured with high-quality materials to withstand harsh off-road conditions and daily driving stresses.
• Qualifies for Fabtech's 5/60 Powertrain Warranty, providing added peace of mind and confidence in the system's reliability.

Construction & Design

The Fabtech Radius Arm System features a robust tubular construction, with each component designed for maximum strength and durability. The radius arms are crafted from high-grade steel tubing, reinforced with dimple die side plates to resist bending and fatigue. The adjustable cam at the axle allows for fine-tuning of caster angles, ensuring optimal steering response and tire wear.

The system's coil springs are engineered to provide a balanced ride height and load support, maintaining comfort while delivering the desired lift. The included performance shocks are specifically valved to complement the increased suspension travel, offering improved damping and ride quality both on-road and off-road. The rear block and U-bolt kit are precision-machined for a secure fit, completing the lift with minimal compromise to handling or stability.

Performance & Sound

This suspension upgrade significantly enhances your truck's off-road capabilities by increasing ground clearance and wheel travel. The upgraded shocks improve handling and stability during spirited driving or challenging terrain. While specific horsepower or torque gains are not claimed, the system supports larger tires and better suspension geometry, which can contribute to improved overall vehicle performance and responsiveness.

Installation & Fitment

The Fabtech 6" Radius Arm System is designed as a bolt-on upgrade, making installation straightforward for experienced DIY enthusiasts or professional installers. The kit uses factory mounting points and requires no cutting or welding, ensuring a clean and precise fit. Some alignment adjustments may be necessary after installation to achieve optimal handling and tire wear. Basic tools and mechanical skills are recommended for proper installation.

• No cutting, drilling, or welding required.
• Compatible with 2017–2021 Ford F250 and F350 4WD gas models.
• Designed to work with factory or aftermarket wheels and tires, with recommended sizes for optimal performance.

What's Included

• Full set of tubular radius arms with dimple die reinforcement
• 6-inch replacement coil springs
• Performance shocks (front and rear)
• Trac Bar relocation bracket
• Pitman arm
• Sway bar drop brackets
• Rear block and U-bolt kit
• All necessary hardware and mounting components
• Installation instructions

Ideal For

This system is perfect for off-road enthusiasts, towing professionals, and truck owners seeking a reliable, high-performance lift solution. It is well-suited for those who want to improve ground clearance, accommodate larger tires, and enhance overall vehicle stability for demanding driving conditions.

Emissions Note

This product is designed for off-road use and may not be legal for street use in all areas. Please check local regulations regarding emissions compliance and vehicle modifications before installation.