Fabtech 4" Radius Arm System with Coils & Stealth for Ford F250/F350 4WD (2008–2016)

2008–2016 Ford F250/F350 4WD 6.2L, 6.8L V8

Part #: K2211M

Overview

The Fabtech 4" Radius Arm System with Coils & Stealth is a comprehensive suspension upgrade designed specifically for Ford F250 and F350 trucks from 2008 to 2016. Engineered to enhance off-road capability, improve ride quality, and provide a more aggressive stance, this system is ideal for enthusiasts seeking reliable performance both on and off the pavement. Whether you're tackling rugged trails or looking to upgrade your truck for better load handling, this kit delivers the durability and functionality you need.

Featuring a full tubular radius arm design, this system offers increased strength and durability compared to stock components. The included adjustable alignment cam at the axle allows for precise caster adjustments, ensuring optimal steering geometry and tire wear. Complete with replacement coil springs, Piman arms, sway bar drops, and a rear block & U-bolt kit, this kit provides everything necessary for a comprehensive suspension overhaul. The Stealth front and rear shocks further enhance ride quality and off-road performance, making your truck more responsive and stable in challenging conditions.

Key Features

The Fabtech Radius Arm System is built with performance and longevity in mind, utilizing high-quality materials and innovative design features to maximize your truck's capabilities.

• Heavy-duty tubular radius arms: Constructed from durable steel with a tubular design, these arms provide superior strength and resistance to bending under heavy loads or off-road impacts.
• Adjustable caster alignment: The integrated cam at the axle allows for precise caster adjustments, helping to maintain proper steering geometry and tire wear over time.
• Complete coil spring upgrade: The included coil springs are designed to lift the vehicle approximately 4 inches, improving ground clearance and allowing for larger tires.
• Piman arms and sway bar drops: These components work together to restore proper suspension geometry after lift, ensuring smooth handling and stability.
• Rear block & U-bolt kit: Provides additional lift and support for the rear suspension, maintaining proper ride height and load capacity.
• Stealth shocks: Front and rear shocks from Fabtech's Stealth series offer a balance of off-road durability and on-road comfort, reducing body roll and improving handling.
• No welding required: Designed for bolt-on installation, this system can be installed with basic tools in approximately 6-7 hours, with only six holes to drill.
• Patented design: The unique radius arm structure enhances strength and reduces flex, providing a more stable and controlled ride.

Construction & Design

The Fabtech Radius Arm System features a robust tubular construction, ensuring longevity and resistance to the stresses of off-road driving. The radius arms are engineered with precision CAD modeling and are fully TIG-welded for superior strength and consistency. The use of high-quality steel components ensures that the suspension can withstand demanding conditions while maintaining precise alignment. The system's design minimizes caster change during lift, preserving steering feel and tire wear, and the adjustable cam at the axle allows for fine-tuning to achieve optimal alignment settings.

The coil springs are engineered to provide a balanced lift height, supporting larger tires and improved ground clearance without sacrificing ride comfort. The sway bar drops and Piman arms are designed to restore factory suspension geometry, preventing handling issues common with lifted trucks. The Stealth shocks are engineered to absorb impacts efficiently, providing a smooth ride on rough terrain while maintaining excellent stability and control on the highway.

Performance & Sound

This suspension system significantly improves off-road capability by increasing ground clearance and wheel travel. The upgraded coil springs and shocks work together to deliver a more responsive and controlled ride, whether you're navigating rocky trails or hauling heavy loads. The system's design reduces body roll and enhances steering precision, giving you confidence in challenging driving conditions. While specific horsepower or torque gains are not applicable, the improved suspension response translates to better overall vehicle handling and stability.

Installation & Fitment

The Fabtech Radius Arm System is designed for a straightforward bolt-on installation, with no welding required. The process involves drilling six holes, making it accessible for DIY enthusiasts with basic mechanical skills. The kit includes all necessary hardware and components for a complete upgrade. Estimated installation time is approximately 6-7 hours, depending on experience and tools available. No cutting or complex modifications are necessary, and the system is engineered to fit seamlessly with your existing factory components, ensuring a secure and precise fit.

• Requires basic hand tools and standard mechanic's tools
• Designed for 2008–2016 Ford F250 and F350 4WD models
• Compatible with stock or aftermarket tires up to 35 inches in diameter

What's Included

• Heavy-duty tubular radius arms with adjustable caster cam
• Replacement coil springs
• Piman arms and sway bar drop brackets
• Rear block and U-bolt kit
• Stealth front and rear shocks
• All necessary mounting hardware and instructions

Ideal For

This suspension upgrade is perfect for off-road enthusiasts, truck owners needing increased ground clearance, and those looking to improve handling and ride quality on their Ford F250 or F350. Whether you're tackling rugged trails, hauling heavy loads, or simply want a more aggressive stance, this kit provides the durability and performance you need.

Emissions Note

This product is designed for off-road use and may not be emissions compliant in all areas. Please verify local regulations before installation. This kit is not CARB-approved and is intended for off-road or recreational use only.