2017-2022 Superduty 6-8.5" Tubular Radius Arms (77-27700)

The ReadyLIFT Tubular Radius Arm Upgrade Kit for the 2017-2022 Ford Super Duty F250/F350 is a heavy-duty suspension solution engineered specifically for trucks with significant lift heights. Designed to correct suspension geometry and caster angles on vehicles with 6.0 to 8.5 inches of lift, these radius arms are critical for maintaining steering precision and road feel. Built to withstand the extreme demands of Super Duty trucks, these arms are formed inward to provide extra tire clearance, allowing for larger off-road tire fitment without sacrificing articulation or ride quality.

Features

• Heavy-duty tubular steel construction provides maximum structural strength for high-lift applications.
• Specifically engineered to correct suspension geometry on models with 6.0-inch to 8.5-inch lifts.
• Optimizes the caster angle to improve front-end stability and steering response.
• Arms are formed inward to allow for additional clearance, accommodating oversized off-road tires.
• Equipped with oversized rubber bushings to isolate road noise and reduce vibration harshness.
• Provides a clean, professional aesthetic to the front suspension of the Ford Super Duty.
• Includes a specialized cam bolt kit for precise and easy alignment adjustments.
• Direct bolt-on design facilitates a straightforward installation process with no permanent modifications.

Notes

• A professional wheel alignment is required after installation to ensure optimal handling and safety.
• Headlamp aim must be checked and adjusted for safety following the significant change in ride height.
• Advanced Driver Assistance Systems (ADAS) should be recalibrated to maintain proper monitoring and function.
• Installation by a certified mechanic is recommended to ensure all critical geometry corrections are properly executed.
• Note: If currently using caster shims from a smaller lift or leveling kit, they should be removed during installation.

Compatibility Notes

• Fits 2017–2022 Ford Super Duty F250 and F350 Diesel 4WD models.
• Designed exclusively for lift heights between 6.0 inches and 8.5 inches.
• Successful user fitment has been noted on lifts up to 10 inches for caster correction.

Specs

• Material: Heavy-Duty Tubular Steel.
• Lift Compatibility: 6.0" to 8.5" Front Lift.
• Bushings: Oversized Vibration-Isolating Rubber.
• Installation Time: Estimated 3 hours.
• Kit Contents: Left assembled radius arm, right assembled radius arm, and a cam bolt kit.