BDS 4 Inch Lift Kit w/ Radius Arms | Ford F450 Super Duty (2020-2022) 4WD | FOX 2.0 Performance Series Shocks

Configured with FOX 2.0 Performance Series shocks featuring a 2-inch impact extruded aluminum body, an internal floating piston (IFP) monotube design, CNC machined 6061-T6 aluminum mounting ends, a massive 5/8-inch hard chrome plated heat-treated alloy steel shaft, race-developed high-flow piston design, and application-specific valving. Clear anodized finish for long-lasting durability.

Overview

The BDS 4" Radius Arm Lift Kit is engineered for the 2020–2022 Ford F-450 Super Duty 4WD, delivering strength, durability, and reliable everyday performance. A radius-arm setup excels in simplicity, long-term dependability, and predictable handling — qualities particularly well suited to heavy-duty trucks like the F-450. Heavy-duty BDS radius arms handle serious workload demands while maintaining confident steering feel and excellent stability under towing and hauling conditions.

The kit includes Pro-Ride coil springs for proper lift height and ride quality, a forged drop pitman arm and heavy-duty track bar drop bracket for steering geometry correction, and your choice of shock absorber — BDS NX2 Nitro Series, FOX 2.0 Performance Series, or FOX 2.5 Performance Elite with DSC adjusters.

Features

• Heavy-duty DOM steel radius arms replace factory stamped steel units
• Radius arms restore proper caster angle, axle alignment, and suspension geometry for predictable steering and stable handling
• Caster adjustment accommodates a wide range of lift heights
• OE-style rubber bushings at frame mounts isolate noise and vibration, provide a smoother and quieter ride, and require no ongoing greasing or maintenance
• Full-length Pro-Ride coil springs provide correct lift height and smooth, predictable ride across various terrains
• BDS forged drop pitman arm maximizes steering radius at 4 inches of lift
• Heavy-duty track bar drop bracket recenters the front axle and keeps steering geometry in phase through suspension travel
• Choice of FOX shocks ranging from 2.0 to 2.5 Performance Elite

Specifications

• Lift Height: 4 inches
• Radius Arm Material: Heavy-duty DOM steel
• Pitman Arm: BDS forged drop
• Coil Springs: Full-length Pro-Ride
• Frame Mount Bushings: OE-style rubber
• Vehicle Fitment: 2020–2022 Ford F-450 Super Duty 4WD

Installation

• Estimated Installation Time: 8–10 hours
• Difficulty: Difficult
• Tools Required: Cut Off Wheel or equivalent, Reciprocating Saw, Welding Equipment

Important Notes

These kits are designed for the F-450 style front end. They do not work with the standard Ford Super Duty F-250/350 axle width.