BDS 4 Inch Lift Kit w/ 4-Link | FOX 2.5 Coil-Over Conversion | Ford F250/F350 Super Duty (2017-2019) 4WD Diesel | Leaf Springs | FOX 2.0 Performance Series

Rear Lift Option: Leaf Springs — multi-leaf progressive design for a smooth ride with anti-friction pads for quiet operation. Reduces axle wrap and creates a more controlled, stable feel while maintaining factory payload weight ratings.

Rear Shock: FOX 2.0 Performance Series — 2-inch impact extruded aluminum body, internal floating piston (IFP) monotube design, CNC machined 6061-T6 aluminum mounting ends, massive 5/8-inch hard chrome plated heat-treated alloy steel shaft, race-developed high-flow piston design, application-specific valving, and long-lasting clear anodized finish. Fully serviceable.

Overview

This 4-inch lift kit with 4-Link and FOX 2.5 Performance Elite coil-over conversion is designed for 2017–2019 Ford F-250/F-350 Super Duty diesel-powered 4WD trucks (SRW models only). The kit provides clearance for up to 37-inch tires and includes everything necessary for front and rear installation. Up front, the kit features diesel-specific FOX 2.5 coil-over shocks, 4-link control arms with conversion brackets, a forged drop pitman arm, a track bar bracket for steering correction, sway bar relocation, and brake line brackets. In the rear, the kit uses a high-strength fabricated lift block or optional leaf springs, longer u-bolts, brake line brackets, and a matching set of FOX Performance shocks.

4-Link Conversion

The BDS 4-link system converts the factory stamped steel radius arms to optimize suspension geometry for improved handling characteristics, strength, and stability. This bolt-on upgrade uses high-strength 1/4-inch steel brackets that allow mounting of HD upper and lower control arms to correct axle positioning while limiting caster change throughout wheel travel.

FOX 2.5 Performance Elite Coil-Over

FOX 2.5 Performance Elite shocks mount in the factory coil bucket location and include a remote reservoir for additional fluid capacity to keep shocks running cool in rough terrain. The DSC (Dual Speed Compression) adjuster provides 10 separate low-speed and 12 high-speed compression levels via two adjuster knobs. The reservoir features a black anodized aluminum finish to increase cooling efficiency. An additional secondary FOX 2.0 shock is included for maximum performance. Eibach coil springs are used for smooth ride quality through rough terrain.

Steering Correction

A forged drop pitman arm minimizes steering angle after the lift. A heavy-duty track bar drop bracket keeps the steering components in phase through suspension travel while recentering the front axle.

Features

• FOX 2.5 coil-over mounts in factory coil bucket location
• Adds additional secondary FOX 2.0 shock for maximum performance
• Eibach coil springs for smooth ride through rough terrain
• Heavy-duty 4-link control arms for improved handling, stability, strength, and caster control during wheel travel
• Track bar relocation bracket and pitman arm maintain proper steering angles for improved handling
• Fabricated steel blocks provide level stance from front to rear
• FOX shocks are fully serviceable and resistant to corrosion and harsh environments

Installation

• Estimated Time: 8–10 hours
• Difficulty: Difficult
• Special Tools Required: Cut-off Tool, Pitman Arm Puller

Important Notes

• If equipped with a 2-piece rear driveshaft, a Carrier Bearing Drop Kit may be required (BDS123402).
• 37 x 12.50 tires may require minor trimming.
• Block kit option will fit both 2 and 3 leaf main trucks.
• If your truck is equipped with a factory rear sway bar, add: 123005.
• Fits SRW models only.