4-Inch Radius Arm Lift Kit

Improve the ride, stance, performance, and capability of your 2011-2016 Ford F250 and F350 Super Duty diesel truck with this 4-inch radius arm lift kit from BDS Suspension. Engineered for a 4WD diesel configuration, this kit provides clearance for up to 35-inch tires. Up front, the kit includes diesel-specific Pro-Ride dual rate coil springs for a remarkable ride across various terrains. Heavy-duty tubular steel radius arms are supplied in place of the factory arms, offering caster adjustment and an OE-style rubber bushing for smooth operation. Steering geometry is corrected with a forged drop pitman arm to minimize steering angle and a heavy-duty track bar drop bracket to keep the front axle centered. A u-bolt flip kit is included for maximum ground clearance, along with brake line brackets. Customers can choose between standard NX2 Nitro Series shocks or an upgrade to FOX 2.0 Performance Series shocks for enhanced off-road performance. Installation is described as easy and 100% bolt-on. The track bar relocation bracket and pitman arm ensure proper steering angles for improved handling. The fabricated steel blocks provide a level stance, and the included NX2 Nitro shocks feature vehicle-specific valving for better control. The optional FOX 2.0 Performance Series shocks offer a 2-inch extruded aluminum body, IFP monotube design, and application-specific valving for maximum performance. Recommended tire and wheel combinations include 35 x 12.5 tires with 18x9 or 20x9 wheels with 4.5 inches of backspace; some trimming may be required.