Superlift K231F 6-Inch 4-Link Suspension Lift Kit with Fox 2.0 Series Shocks

The Superlift K231F is a complete 6-inch coil spring and 4-Link suspension lift kit engineered for the 2005–2007 Ford F-250 and F-350 Super Duty 4WD diesel trucks. This kit delivers a full 6 inches of lift height while converting to a heavy-duty 4-Link arm configuration, pairing premium Fox Performance Series 2.0 IFP shocks for an aggressive stance and improved on- and off-road performance.

At the heart of this kit are Superlift's precision-engineered, heavy-duty tubular 4-Link arms that feature press-fit REFLEX bushings for superior vibration dampening, flexibility, and long-term durability. The 4-Link design optimizes suspension control and reduces tire wear by limiting caster change throughout the full range of suspension travel.

Up front, the kit includes diesel-specific rate front coil springs matched to the weight demands of the powerstroke platform, along with a new track bar relocation bracket to maintain proper steering geometry and track bar phasing. In the rear, a fabricated rear block replaces the factory block and is engineered to preserve correct pinion and axle angles while minimizing axle wrap.

Kit Includes:

• Diesel-specific rate front coil springs
• Heavy-duty tubular 4-Link arms with press-fit REFLEX bushings
• Drop pitman arm for steering correction
• Track bar relocation bracket
• Sway bar correction hardware
• Brake line brackets
• Steering stabilizer bracket
• Fabricated rear lift block (replaces factory block)
• Front and rear Fox Performance Series 2.0 IFP shocks
• All required mounting hardware
• Step-by-step installation manual

Important Notes:

• For vehicles equipped with a 2-piece rear driveshaft, a carrier bearing spacer (Part #9669) is required separately
• For Super Duty trucks equipped with 1-7/8" blocks and top overloads, Part #11874 must be purchased in addition to this kit

The Superlift K231F includes a detailed instruction manual suitable for both DIY enthusiasts and professional installers, making it one of the most complete and straightforward 6-inch lift solutions available for the 2005–2007 Ford Super Duty platform.