Fabtech Radius Arm System

2017–2021 Ford F250/F350 4WD Gas 6" Lift

Part #: K2256DL

Overview

The Fabtech 6" Radius Arm System with Coils & Dirt Logic Shocks is a comprehensive suspension upgrade designed specifically for 2017–2021 Ford F250 and F350 4WD gas models. Engineered to deliver exceptional off-road capability, improved ride quality, and enhanced durability, this system is ideal for enthusiasts who demand more from their heavy-duty trucks. Whether you're tackling rugged trails, towing heavy loads, or seeking a commanding stance, this kit provides the performance and reliability you need.

Featuring a patented radius arm design, this system offers a full tubular structure reinforced with dimple die side plates for maximum strength and longevity. The adjustable alignment cam at the axle allows for precise caster adjustments, ensuring optimal steering response and tire wear. The included 6-inch replacement coil springs provide the necessary lift to clear larger tires and improve ground clearance, all while maintaining a comfortable ride.

Key Features

The Fabtech Radius Arm System incorporates several innovative features to enhance your truck's performance and durability:

• Heavy-Duty Tubular Radius Arms: Constructed from full tubular steel with dimple die side plates, these arms provide superior strength and resistance to flex and fatigue during demanding off-road use.
• Adjustable Caster Alignment: The integrated cam at the axle allows for fine-tuning caster angles, promoting better steering stability and tire wear.
• 6-Inch Coil Springs: Heavy-duty replacement coils lift the front of your truck, offering increased ground clearance and a commanding stance without sacrificing ride quality.
• Dirt Logic 2.25 Shocks: Premium shocks included in the kit feature advanced damping technology to absorb bumps and impacts, ensuring a smooth and controlled ride both on and off-road.
• Relocation Brackets & Drop Components: The system includes a trac bar relocation bracket, pitman arm, sway bar drops, and a rear block & u-bolt kit, all designed to maintain proper geometry and handling after lift installation.
• Durable Construction: All components are crafted from high-quality materials, ensuring long-lasting performance under tough conditions.

Construction & Design

The Fabtech Radius Arm System is built with durability and precision in mind. The tubular radius arms are engineered from thick-wall steel, providing exceptional strength to withstand the rigors of off-road adventures and heavy towing. The dimple die side plates add extra reinforcement, preventing flex and ensuring consistent alignment over time.

The system's design maintains factory-like handling characteristics while offering increased ground clearance and a more aggressive stance. The inclusion of Dirt Logic 2.25 shocks ensures superior damping performance, reducing body roll and improving stability during spirited driving or challenging terrain. All brackets and components are CNC-machined and TIG-welded for precise fitment and durability.

Performance & Sound

With this suspension upgrade, you'll experience improved off-road capability, better wheel articulation, and enhanced stability. The increased lift and upgraded shocks work together to provide a smoother ride over rough terrain, while the adjustable caster ensures precise steering response. The system's design minimizes noise and vibrations, delivering a confident driving experience both on and off the pavement.

Installation & Fitment

The Fabtech 6" Radius Arm System is a bolt-on installation that utilizes existing factory mounting points and hardware. While some mechanical skill is recommended, the system is designed for straightforward installation with minimal modifications required. No cutting, drilling, or extensive tuning is necessary, making it a suitable upgrade for DIY enthusiasts and professional installers alike. Proper alignment after installation is recommended to ensure optimal handling and tire wear.

• Includes all necessary brackets, coils, shocks, and hardware for a complete lift kit installation.
• Designed specifically for 2017–2021 Ford F250 and F350 4WD gas models.

What's Included

• Full set of tubular radius arms with dimple die reinforcement
• 6-inch replacement coil springs
• Dirt Logic 2.25 shocks (front)
• Trac bar relocation bracket
• Pitman arm
• Sway bar drop brackets
• Rear block & u-bolt kit
• All necessary mounting hardware and instructions

Ideal For

This suspension system is perfect for off-road enthusiasts, heavy-duty truck owners, and anyone looking to improve ground clearance, ride quality, and vehicle stance. Whether you're tackling challenging trails, hauling heavy loads, or simply want a commanding presence on the road, this kit provides the performance and durability you need.

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 before installation. The kit qualifies for Fabtech's 5/60 Powertrain Warranty, ensuring peace of mind with your upgrade.