Fabtech Rad Arm System

2017–2021 Ford F250/F350 4WD Gas

Part #: K2256M

Overview

The Fabtech 6-inch Rad Arm System with Coils & Stealth 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 larger tires, this system is ideal for enthusiasts who demand durability and performance from their heavy-duty pickup. Whether you're tackling rugged trails, hauling heavy loads, or seeking a more aggressive stance, this kit provides the strength and adjustability needed to elevate your truck's capabilities.

Featuring a full tubular radius arm design with dimple die side plates, the system offers increased strength and rigidity, ensuring reliable performance under demanding conditions. The adjustable alignment cam at the axle allows for precise caster adjustments, helping to optimize steering response and tire wear. The included 6-inch replacement coil springs provide the necessary lift to accommodate larger tires and improve ground clearance, making this system perfect for off-road adventures or aesthetic upgrades.

Completing the package are essential components such as a trac bar relocation bracket, Pitman arm, sway bar drops, and a rear block & U-bolt kit. The system is paired with Fabtech's Stealth shocks, which are designed to deliver a smooth, controlled ride both on and off the pavement. This comprehensive setup ensures your truck maintains excellent handling characteristics while gaining the lift and durability needed for serious off-road use.

Key Features

The Fabtech Rad Arm System incorporates several innovative features to maximize performance and longevity:

• Full Tubular Radius Arms: Constructed from high-strength tubular steel with dimple die side plates, these arms provide superior durability and resistance to bending under heavy loads or rough terrain.
• Adjustable Caster Alignment: The built-in cam at the axle allows for precise caster adjustments, helping to improve steering stability and tire wear over time.
• Lift Springs: The 6-inch replacement coil springs are designed to lift the front of your truck, increasing ground clearance and allowing for larger tires, which enhances off-road capability and visual stance.
• Stealth Shocks: These high-performance shocks are engineered for a smooth ride, offering excellent damping characteristics to handle rough terrain while maintaining comfort on daily drives.
• Relocation Brackets & Drop Components: The trac bar relocation bracket, sway bar drops, and Pitman arm are all designed to restore proper geometry and handling after lifting, ensuring your truck remains predictable and safe to drive.
• Rear Block & U-bolt Kit: Provides the necessary rear lift to match the front, maintaining proper axle alignment and ride height.
• Warranty: This system qualifies for Fabtech's 5-year/60,000-mile Powertrain Warranty, offering peace of mind alongside performance enhancements.

Construction & Design

The Fabtech Rad Arm System is built with durability and precision in mind. The tubular radius arms are crafted from thick-walled steel, ensuring resistance to bending and impact. The dimple die side plates not only add strength but also contribute to a distinctive, professional appearance. All components are TIG-welded for superior strength and consistency, providing a reliable foundation for off-road adventures and heavy-duty use.

The adjustable cam at the axle is designed for easy alignment adjustments, allowing you to fine-tune your caster angle for optimal handling. The coil springs are engineered to provide a consistent lift and support, maintaining ride quality while accommodating larger tires. The Stealth shocks are internally valved and designed to absorb impacts smoothly, reducing body roll and improving overall stability.

Overall, the system's design emphasizes strength, adjustability, and ease of installation, making it a top choice for serious off-road enthusiasts and daily drivers alike.

Performance & Sound

This suspension system significantly enhances your truck's off-road performance by increasing ground clearance, improving wheel articulation, and providing a more aggressive stance. The upgraded coil springs and shocks work together to deliver a smoother ride over rough terrain, while the adjustable caster ensures precise steering response. Although specific horsepower or torque gains are not claimed, the system supports increased payload capacity and towing performance by strengthening the front suspension components.

The installation of this lift kit may result in a more commanding and aggressive sound profile during off-road driving, especially when traversing uneven terrain or during spirited driving. The shocks and suspension geometry are optimized to provide a confident, controlled ride in a variety of conditions.

Installation & Fitment

The Fabtech Rad Arm System is designed as a bolt-on upgrade, with most components directly replacing factory parts. The kit includes all necessary brackets, arms, springs, shocks, and hardware for a straightforward installation process. No cutting, drilling, or extensive modifications are required, although professional installation is recommended to ensure proper alignment and safety. Once installed, your truck will have a lifted stance with improved off-road capability and handling characteristics.

• Designed specifically for 2017–2021 Ford F250 and F350 4WD Gas models
• Includes all necessary components for a complete upgrade
• No cutting or drilling required for installation
• Alignment adjustments recommended after installation

What's Included

• Full set of tubular radius arms with dimple die side plates
• 6-inch replacement coil springs
• Stealth 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

Ideal For

This lift kit is perfect for off-road enthusiasts, heavy-duty truck owners, and anyone looking to improve ground clearance and handling on their Ford F250 or F350. Whether you're tackling rugged trails, hauling heavy loads, or simply want a more aggressive appearance, this system provides the strength, adjustability, and performance needed to meet demanding conditions.

Emissions Note

This suspension system is designed for off-road use and does not affect emissions compliance. Please verify local regulations before installation, as modifications may impact vehicle legality in certain areas.