4 Link Upgrade Kit | 6-8 Inch Lift | Ford F-250/f-350 Super Duty 4wd (05-15)

Built for Super Duty owners who need corrected geometry after a 6–8 inch lift, this 4 Link Upgrade Kit restores factory caster and suspension angles that preserve handling and driveability. It's a bolt-on rear suspension accessory designed to work alongside your existing lift, allowing 37–40 inch tire clearance without compromise.

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

What's included

• 6 in Up Arm Kit — upper control arm assembly engineered to restore proper suspension geometry after lift installation.
• 6 in Lower Arms — lower control arm pair that works in tandem with the upper arms to maintain correct caster and suspension angles.
• 595 Kit Box — brackets, fasteners, and hardware needed for complete 100% bolt-on installation.

Important notes

• This kit is designed exclusively for Ford Super Duty models equipped with a 6–8 inch suspension lift. It will not function properly on vehicles with other lift heights.

Why customers pick this at Road Runner

• Control arm drop brackets set caster precisely — critical to keeping your truck's factory handling and driveability intact after a big lift.
• 100% bolt-on design means no welding, cutting, or modification to your frame or existing suspension.
• Professionally installed by technicians who specialize in Super Duty lifts and geometry correction every week.
• Alignment performed in-house as part of every suspension upgrade — your truck leaves square and straight.
• Rough Country lifetime warranty backed locally at Road Runner.
• Fits the recommended 37–40 inch tire range without compromising driveline angles.

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