Fabtech 4-Link Suspension System

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

Part #: K2257DL

Overview

Upgrade your Ford Super Duty's suspension with the Fabtech 6" 4-Link System designed specifically for 2017–2021 Ford F250 and F350 4WD Gas models. This bolt-on suspension kit delivers exceptional articulation and wheel travel, making it ideal for off-road enthusiasts, towing professionals, and those seeking improved ride quality and durability. Crafted with heavy-duty components and race-inspired design, this system transforms your truck's performance and capability, allowing you to tackle challenging terrains with confidence while maintaining a smooth, controlled ride on the street.

Whether you're looking to enhance your vehicle's off-road prowess, support larger tires, or improve overall handling, this 4-Link system provides a robust solution that combines strength, precision, and ease of installation. With its comprehensive package, you'll get a significant lift and improved suspension geometry, ensuring your Super Duty is ready for any adventure or work task.

Key Features

The Fabtech 4-Link Suspension System incorporates advanced engineering and high-quality materials to deliver superior performance and longevity. Key features include:

• Heavy-wall 2-inch diameter links constructed from durable steel, providing maximum strength and resistance to bending or flexing during demanding off-road use.
• Race-style 1-inch Uniballs at critical pivot points, offering superior strength, smooth articulation, and reduced wear compared to traditional ball joints.
• Thick 1/4-inch steel brackets that securely mount the links to the vehicle's frame without the need for cutting or welding, simplifying installation and maintaining factory integrity.
• Designed to work seamlessly with Fabtech's replacement coil springs, allowing for a customizable ride height and improved load support.
• Includes sway bar drops, trac bar relocation bracket, and a Pitman arm to ensure proper alignment, handling, and stability after installation.
• Rear block and U-bolts included to complete the lift and support larger tires, enhancing off-road clearance and appearance.

Construction & Design

This suspension system features precision-engineered components designed for maximum durability and performance. The heavy-duty steel links are built with thick walls to withstand the rigors of off-road driving and heavy loads. The use of race-style Uniballs at key pivot points ensures smooth articulation and reduces maintenance needs, providing a reliable solution for demanding conditions. The brackets are fabricated from 1/4-inch steel, CNC-cut and formed for a precise fit, allowing for straightforward bolt-on installation without modifications to the vehicle's frame or body. The system's design maintains factory steering geometry and alignment, ensuring predictable handling and tire wear.

Performance & Sound

With the Fabtech 4-Link System installed, your Ford Super Duty will experience improved wheel articulation, allowing for better traction and stability on uneven terrain. The increased wheel travel enhances off-road capability, while the heavy-duty construction ensures long-lasting performance under heavy loads and challenging conditions. The system also helps support larger tires, giving your truck a more aggressive stance and improved ground clearance. Although primarily designed for performance and durability, this suspension upgrade maintains a comfortable ride quality suitable for daily driving and extended trips.

Installation & Fitment

The Fabtech 4-Link Suspension System is designed as a bolt-on upgrade that requires no cutting or welding, making it accessible for experienced DIY enthusiasts and professional installers alike. Basic mechanical skills and standard tools are sufficient for installation. The system mounts directly to factory mounting points, preserving the vehicle's original structure and alignment. Some minor adjustments may be necessary to achieve optimal alignment and ride quality. No special tuning or modifications are required, and the kit includes all necessary hardware for a complete installation.

• Complete bolt-on installation with no cutting or welding required
• Designed specifically for 2017–2021 Ford F250 and F350 4WD Gas models
• Supports larger tires and improved off-road articulation

What's Included

• Heavy-duty 2-inch diameter steel links with race-style Uniballs
• Steel brackets for frame mounting
• Sway bar drop brackets
• Trac bar relocation bracket
• Pitman arm
• Rear block and U-bolts
• All necessary hardware and mounting components

Ideal For

• Off-road enthusiasts seeking increased articulation and wheel travel
• Heavy-duty towing and hauling applications
• Owners looking to lift their Super Duty for larger tires and improved ground clearance
• Performance-minded truck owners who want a durable, reliable suspension upgrade

Emissions Note

This suspension system is a vehicle modification and does not affect emissions compliance. Please verify local regulations before installation. This product is intended for off-road use and may not be street-legal in all areas.