6 Inch Lift Kit | Rear Springs | M1 | Ford F-250/f-350 Super Duty 4wd (99-04)

Built for Ford Super Duty owners who want a level stance and room for bigger tires, this 6-inch lift kit raises your truck's front to match the rear, delivering a balanced look with improved ground clearance. The kit supports up to 37-inch tires with proper wheel backspacing and maintains factory-like ride quality with corrected suspension geometry.

Installed and serviced at Road Runner Wheels & Tires. Most lift kits go in the same day. Call (678) 400-6467 to schedule.

What's included

• Pitman Arm — maintains steering geometry and ensures proper handling after the lift.
• Track Bar Bracket — keeps the track bar at the correct angle to preserve factory-like ride and handling.
• Sway Bar Drop Brackets — adjusts sway bar geometry to eliminate bind and restore proper suspension angles.
• Front Leaf Springs (pair) — raises the front of the vehicle 6 inches for leveled stance.
• Rear Leaf Springs (pair) — complements the front lift and supports increased load capacity.
• M1 Monotube Shock Absorbers (pair) — 10-stage variable valve damping with 54mm bodies and spring-loaded piston rods for balanced on and off-road performance.
• U-Bolt Kits — secure leaf springs to the axles.
• Box Kit — mounting hardware and structural reinforcement for the suspension system.

Important notes

• Does NOT fit V-8 gas engine models.
• Does NOT fit dually models.
• Does NOT fit trucks with a production date before March 1, 1999.
• Trucks equipped with a 2-piece rear driveshaft require a carrier bearing drop bracket (#1197), sold separately.
• Proper wheel backspacing is required to safely fit 37-inch tires — our team will verify fitment during your build.

Why customers pick this at Road Runner

• Rough Country Lifetime Replacement Warranty backed by a local dealer you can trust.
• Professional installation by technicians who perform these kits every week — geometry corrected and dialed in right the first time.
• Alignment performed in-house as part of every lift install, ensuring tire wear and steering feel are optimized.
• Local expertise on tire fitment, wheel backspacing, and driveshaft modifications so you get exactly what fits your truck.

Ready to build it? Call (678) 400-6467. Hablamos Español.