Fabtech K2156DL

2011–2013 Ford F450/F550 4WD 10-Lug

Part #: K2156DL

Overview

The Fabtech 6-inch Radius Arm System with Coils & Dual Load Support Shocks is a comprehensive suspension upgrade designed specifically for Ford F450 and F550 4WD trucks from 2011 to 2013. Built to enhance off-road capability, improve ride quality, and support increased load capacities, this system is ideal for heavy-duty applications, towing, and aggressive off-road adventures. Whether you're looking to elevate your truck for better ground clearance or to improve handling under demanding conditions, this kit provides a robust solution that combines durability with performance.

Engineered with the enthusiast and professional in mind, the Fabtech Radius Arm System offers a significant lift while maintaining factory-like handling and stability. The system's components are designed to withstand the rigors of off-road use while providing a smooth, controlled ride on the street. If you're seeking a reliable, high-performance suspension upgrade that supports your truck's heavy-duty tasks, this system is an excellent choice.

Key Features

The Fabtech K2156DL features a range of innovative components and design elements that set it apart from standard suspension systems:

• Patented full tubular Radius Arms reinforced with dimple die side plates, providing increased strength and durability for demanding off-road conditions.
• Adjustable alignment cam at the axle, allowing precise caster adjustment to optimize handling, steering, and tire wear.
• Front spring lift options include 6-inch replacement coil springs, offering substantial ground clearance and improved approach angles for off-road terrain.
• Complete system includes a Trac Bar relocation bracket, Pitman arm, sway bar drops, and a rear block & U-bolt kit, ensuring proper geometry and stability across all axes.
• Includes front and rear Dirt Logic stainless steel shocks (2.25-inch diameter), engineered for superior damping performance and corrosion resistance, delivering a smooth ride both on and off the pavement.
• Heavy-duty construction with high-quality materials designed to withstand the stresses of off-road driving and heavy loads.
• Designed for easy bolt-on installation with minimal modifications required, making it accessible for experienced DIY enthusiasts and professional installers alike.
• Compatible with factory or aftermarket wheels and tires, supporting larger sizes for enhanced off-road traction and appearance.

Construction & Design

The Fabtech Radius Arm System is built with durability and performance in mind. The full tubular radius arms are constructed from high-strength steel, featuring dimple die side plates that add rigidity without unnecessary weight. This design ensures the arms can handle the increased forces encountered during off-road driving and heavy hauling. The adjustable cam at the axle provides fine-tuning capabilities for caster alignment, which is critical for maintaining proper steering geometry and tire wear.

The front coil springs are engineered to provide a 6-inch lift, crafted from high-quality spring steel to maintain consistent ride height and support heavy loads. The stainless steel Dirt Logic shocks are designed with a larger diameter for improved damping and heat dissipation, ensuring long-lasting performance under tough conditions. The rear block and U-bolt kit complement the front components, providing a balanced lift and stable ride quality.

Performance & Sound

This suspension system significantly improves ground clearance, approach, and departure angles, making it well-suited for off-road adventures and heavy-duty work. The upgraded shocks deliver superior damping, reducing body roll and improving handling stability. While specific horsepower or torque gains are not applicable to suspension components, users can expect enhanced ride quality, better load support, and increased off-road capability. The system's design minimizes noise and vibrations, ensuring a comfortable driving experience both on and off the pavement.

Installation & Fitment

The Fabtech K2156DL is a bolt-on suspension upgrade designed for straightforward installation. The system utilizes factory mounting points and requires no cutting or welding in most cases. Proper alignment and setup are recommended after installation to ensure optimal handling and tire wear. Due to the complexity of suspension modifications, professional installation is advised for best results, especially when dealing with heavy-duty trucks and lift components.

• Includes all necessary hardware, brackets, and components for complete installation.
• No cutting, drilling, or extensive modifications are typically required.
• Alignment adjustments are recommended post-installation to achieve proper caster and camber settings.

What's Included

• Full set of tubular Radius Arms with dimple die reinforcement
• 6-inch replacement coil springs for front lift
• Stainless steel Dirt Logic shocks (front and rear, 2.25-inch diameter)
• Trac Bar relocation bracket
• Pitman arm
• Sway bar drop brackets
• Rear block and U-bolt kit
• All necessary mounting hardware and instructions

Ideal For

• Heavy-duty off-road enthusiasts seeking increased ground clearance and durability
• Ford F450/F550 owners needing a reliable suspension upgrade for towing and hauling
• Professional off-road racers and adventurers demanding high-performance suspension components
• Truck owners looking to improve handling, stability, and load support under demanding conditions