Fabtech

2011–2016 Ford F350/F450 4WD 8 Lug 6" Radius Arm System with Coils & Performance Shocks

Part #: K2131

Overview

The Fabtech 6" Radius Arm System is a comprehensive suspension upgrade designed specifically for Ford F350 and F450 models from 2011 to 2016. 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 trucks. Whether you're tackling rugged terrain or seeking a commanding stance for your vehicle, this kit provides the strength and flexibility needed for demanding applications.

Built with precision and quality in mind, the Fabtech Radius Arm System offers a significant lift while maintaining excellent handling characteristics. It is perfect for off-road adventures, towing, or simply achieving a more aggressive look. The system's design ensures a reliable upgrade that supports your vehicle's performance and longevity, making it a popular choice among truck enthusiasts and professional off-roaders alike.

Key Features

The Fabtech 6" Radius Arm System incorporates several innovative features that set it apart from standard suspension upgrades:

• Constructed with full tubular steel components, the radius arms are reinforced with dimple die side plates, providing exceptional strength and durability for heavy-duty use.
• An adjustable alignment cam at the axle allows for precise caster adjustments, ensuring optimal handling and tire wear after installation.
• The system includes 6-inch replacement coil springs designed to provide a balanced lift and ride quality, supporting larger tires and off-road clearance.
• A comprehensive package that includes a trac bar relocation bracket, Pitman arm, sway bar drops, and a rear block & u-bolt kit, ensuring all critical suspension components are upgraded for proper alignment and performance.
• Manufactured in the United States, ensuring high-quality craftsmanship and adherence to strict manufacturing standards.
• Designed to maintain factory steering geometry and handling characteristics while providing increased ground clearance and off-road capability.
• Compatible with 4WD models, offering a bolt-on installation that minimizes downtime and complexity.
• Optimized for off-road performance, supporting larger tires and aggressive driving conditions without sacrificing ride comfort on the street.
• Includes all necessary hardware and components for a complete installation, ensuring a seamless upgrade process.

Construction & Design

The Fabtech Radius Arm System is built with heavy-duty, full tubular steel components that deliver unmatched strength and resilience. The radius arms feature dimple die side plates, which reinforce critical stress points and prevent flexing under demanding loads. The use of high-quality steel ensures longevity and resistance to corrosion, especially important for off-road environments.

The system's design maintains proper caster and pinion angles, thanks to the adjustable cam at the axle, which allows for fine-tuning after installation. The coil springs are engineered to provide a smooth ride while supporting the added height, and the included sway bar drops help retain factory handling characteristics. Overall, the design emphasizes durability, precise fitment, and performance, making it suitable for both daily driving and off-road adventures.

Performance & Sound

With this suspension upgrade, you'll experience improved ground clearance, better off-road articulation, and a commanding stance. The increased ride height allows for larger tires, enhancing traction and obstacle clearance. The system also helps support increased payload and towing capacity, making your truck more versatile and capable.

While primarily focused on performance and durability, the system's design ensures a stable and controlled ride, with minimal noise or vibration. The upgraded components work together to deliver a confident driving experience both on and off the pavement.

Installation & Fitment

The Fabtech 6" Radius Arm System is a bolt-on upgrade designed for straightforward installation on compatible Ford F350 and F450 4WD models from 2011 to 2016. The kit includes all necessary hardware and components, and no cutting or welding is required for installation. Basic mechanical skills and standard tools are sufficient to complete the upgrade.

• Proper alignment is recommended after installation to ensure optimal handling and tire wear.
• Some minor adjustments may be necessary to achieve perfect caster and pinion angles, which can be fine-tuned using the included adjustable cam.

For best results, professional installation is recommended to ensure safety and proper fitment. Once installed, your truck will be ready to conquer challenging terrains with increased stability and ground clearance.

What's Included

• Full tubular radius arms with reinforced dimple die side plates
• 6-inch replacement coil springs
• Trac bar relocation bracket
• Pitman arm
• Sway bar drop brackets
• Rear block & u-bolt kit
• All necessary mounting hardware and instructions

Ideal For

• Off-road enthusiasts seeking increased ground clearance and articulation
• Heavy-duty truck owners who need a reliable suspension upgrade for towing and payload
• Ford F350/F450 owners looking to achieve a aggressive stance and improved handling
• Those wanting a durable, American-made suspension system with proven performance

Emissions Note

This suspension system is designed for off-road use and is not intended for street legal applications in all jurisdictions. Please verify local regulations before installation. The product is compliant with applicable standards for off-road use only.