2017-2022 Superduty 2.5-4" Tubular Radius Arms (77-27400)

The ReadyLIFT Tubular Radius Arm Upgrade Kit for the 2017-2022 Ford Super Duty F250/F350 is a heavy-duty suspension solution engineered to handle the rigorous demands of lifted diesel trucks. These radius arms are designed to correct suspension geometry and caster angles on vehicles with 2.5 to 4.0 inches of lift. Formed inward to provide additional tire clearance, these arms allow for larger wheel and tire combinations while utilizing oversized rubber bushings to isolate road noise and reduce vibration for a more refined driving experience.

Features

• Heavy-duty tubular steel construction built for maximum structural strength and durability.
• Specifically designed to correct suspension geometry on 2.5-inch to 4.0-inch lifted models.
• Corrects and optimizes the caster angle for improved steering feel and tracking.
• Arms are formed inward to allow for additional clearance for oversized tires.
• Equipped with oversized rubber bushings to isolate road noise and vibration harshness.
• Direct bolt-on design facilitates a quick and easy installation with no permanent modifications.
• Includes a specialized cam bolt kit for fine-tuned alignment adjustments.
• Provides a clean, professional aesthetic to the front suspension of the Ford Super Duty.

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.
• If currently using caster shims with a leveling kit, they should be removed when installing these radius arms.

Compatibility Notes

• Fits 2017–2022 Ford Super Duty F250 and F350 Diesel 4WD models.
• Designed for lift heights between 2.5 inches and 4.0 inches.
• May gain additional tire clearance at full turn compared to stock arms.

Specs

• Material: Heavy-Duty Tubular Steel.
• Lift Compatibility: 2.5" to 4.0" Front Lift.
• Bushings: Oversized Vibration-Isolating Rubber.
• Installation Time: Estimated 3 hours.
• Kit Contents: One (1) left assembled radius arm, one (1) right assembled radius arm, and a cam bolt kit.