Fabtech

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

Part #: K2218

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. Engineered to enhance off-road capability, improve ride quality, and support increased load capacity, this system is ideal for enthusiasts who demand durability and performance from their heavy-duty diesel trucks.

This kit provides a significant lift of 6 inches, giving your truck a commanding stance and increased ground clearance. Whether you're tackling rugged trails, hauling heavy loads, or seeking a more aggressive look, the Fabtech Radius Arm System delivers reliable performance and superior handling. The system's robust construction and precision engineering ensure that your vehicle maintains excellent stability and control under demanding conditions.

Key Features

The Fabtech Radius Arm System incorporates several innovative features that set it apart from standard suspension upgrades:

• Full tubular radius arms reinforced with dimple die side plates provide exceptional strength and durability, ensuring long-lasting performance even under heavy loads and off-road abuse.
• An adjustable alignment cam at the axle allows for precise caster adjustment, helping you achieve optimal alignment and steering response for improved handling and tire wear.
• Front spring lift options include 6-inch replacement coil springs, designed to provide a balanced lift height while maintaining ride quality and load-carrying capacity.
• The system includes a Trac Bar relocation bracket, which helps maintain proper axle positioning and reduces steering wander, enhancing overall stability.
• A heavy-duty Pitman Arm and sway bar drops are included to restore factory steering geometry and improve handling characteristics after the lift is installed.
• Complete with a rear block and U-bolt kit, this system ensures a level stance and secure axle attachment at the rear, supporting heavy-duty towing and payloads.
• Performance shocks are included for both front and rear, engineered to provide superior damping, ride comfort, and off-road control.

Construction & Design

The Fabtech Radius Arm System is built with high-quality materials to withstand the rigors of off-road driving and heavy-duty use. The tubular radius arms are crafted from durable steel and feature dimple die side plates for added strength and resistance to bending or cracking. The system's components are precision-engineered and CAD-designed to ensure a perfect fit and optimal performance.

The inclusion of adjustable cams and relocation brackets demonstrates Fabtech's focus on fine-tuning and customization, allowing you to achieve the desired alignment and handling characteristics. The use of heavy-duty U-bolts, high-grade coil springs, and performance shocks ensures that every aspect of the suspension upgrade contributes to a smoother, more controlled ride both on and off the pavement.

Performance & Sound

This suspension system is designed to improve your truck's off-road capability, providing increased ground clearance, better approach and departure angles, and enhanced stability on uneven terrain. The upgraded shocks deliver improved damping, reducing body roll and minimizing impact harshness, resulting in a more comfortable ride during spirited driving or heavy-duty hauling. While specific horsepower or torque gains are not claimed, the system supports your vehicle's existing powertrain by optimizing suspension geometry and handling.

Installation & Fitment

The Fabtech 6" Radius Arm System is a bolt-on upgrade that requires no cutting or welding for installation. It is designed to utilize factory mounting points and OEM components where applicable, simplifying the installation process. Basic hand tools and mechanical skills are sufficient, but professional installation is recommended to ensure proper alignment and safety. The system includes all necessary hardware and instructions for a straightforward upgrade.

• Designed specifically for 2017–2021 Ford F250 and F350 4WD diesel trucks
• Includes front and rear components for a complete lift solution
• No cutting, drilling, or tuning required

What's Included

• Full set of tubular radius arms with dimple die side plates
• 6-inch replacement coil springs for front lift
• Trac Bar relocation bracket
• Heavy-duty Pitman Arm
• Sway Bar drop brackets
• Rear block and U-bolt kit
• Performance shocks for front and rear
• All necessary hardware and installation instructions

Ideal For

This suspension system is perfect for off-road enthusiasts, heavy-duty truck owners, and anyone looking to improve their Ford F250 or F350's ground clearance, stability, and load-carrying capacity. Whether you're tackling challenging trails, hauling heavy loads, or simply want a commanding stance, this kit provides the durability and performance you need.