Important Notes
- Removal of the factory leaf spring block is required. The net rear lift will vary depending on the height of the factory block but will result in a level stance.
- If equipped with a 2-piece rear driveshaft, a Carrier Bearing Drop Kit may be required (BDS123402)
- Torque wrench capable of 405 ft-lbs required.
- 37 x 12.50 tires may require minor trimming.
Features & Benefits
- FOX 2.5 Coil-Over mounts in factory coil bucket location
- Adds additional secondary FOX 2.0 shock for max performance
- Eibach coil springs ride smooth through the roughest terrain
- Heavy duty tubular steel radius arms that correct caster while maximizing ground clearance
- 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
Built to outperform, upgrade your Ford F350 Dually Super Duty diesel powered truck with this 4-inch radius arm lift kit and FOX 2.5 Performance Elite Coil-over conversion from BDS Suspension. Designed to improve stance, performance, and capability, this kit includes everything necessary to set your dually truck up right with clearance for up to 37" tires.
Up front the lift kit includes diesel-specific FOX 2.5 coil-over shocks, heavy duty replacement radius arms, forged drop pitman arm and track bar bracket for steering correction, sway bar relocation, and brake line brackets.
In the rear this kit utilizes a high-strength fabricated lift block, longer u-bolts, brake line brackets and a matching set of FOX Performance shocks.
FOX Performance Elite Coil-Over
FOX 2.5 Performance Elite shocks offer next level performance for on-road comfort and off-road comfort capability. Tuned and ready to install right out of the box, these bolt-on 2.5-inch diameter shocks are built for abuse and packed with race-proven technology. They include a remote reservoir for additional fluid capacity to keep your shocks running cool so you can push the limits in the rough terrain. The DSC adjuster adds remarkable versatility and precise tuning with a simple twist of either two adjuster knobs, offering 10 separate low-speed and 12 high-speed compression levels, with a black anodized aluminum reservoir to increase cooling efficiency.
HD Radius Arms
In place of the factory stamped steel radius arms BDS supplies a pair of high-strength tubular radius arms. These arms mount into the factory location and offer caster adjustment for a wide range of lift heights along with an OE-style rubber bushing at the frame mount for smooth, quiet, service-free operation.
Steering Correction
To optimize steering geometry once lifted, a forged drop pitman arm is used to minimize the steering angle and pair it with a heavy duty track bar drop bracket to keep them in phase through suspension travel while recentering the front axle.
Recommended Tires & Wheels
(Trimming may be required)
Auxiliary Front and Rear Shock Option
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 to maximize performance
- Long-lasting clear anodized finish
FOX 2.5 Performance Elite Series
- Increased off-road capabilities
- Easily adjust your shock for terrain, load and speed
- 2.5-inch Impact extruded aluminum body
- Massive 7/8-inch hard chrome plated heat-treated alloy steel shaft
- External reservoir design separates shock oil from the high-pressure nitrogen
- DSC - Dual Speed Compression Adjuster comes standard
- Fully serviceable for a lifetime of use
- 1-year Manufacturer's Warranty
