Superlift's 4" Lift Kit with replacement radius arms for 2008-2010 Ford F-250/350 4WD Pickups features set of massive, high clearance, precision engineered, tubular radius arms designed to bolt right into the factory mounts giving your ride a truly custom look and an easy install. These heavy duty radius arms utilize a press fit Cleveite rubber bushing for superior vibration damping and durability. The 4" lift also contains new, engine specific rated, coil springs that works in conjunction with our track bar relocation bracket to ensure proper steering geometry and track bar phasing. Like all Superlift lift kits, the 4" Replacement Radius Arm Lift Kit for 2008-2010 Ford F250/350 4WD is backed by our Limited Lifetime Warranty and Satisfaction Guarantee. NOTE: If equipped with a two-piece driveshaft, also order carrier bearing drop bracket part number 9649. NOTE: If the vehicle is equipped with rear top mount overload springs a longer rear u-bolt kit, part number 11664, is required. Note: This lift kit is packaged with rear blocks and u-bolts that are configured for the Ford F-250/F-350 pickups with the factory 1 7/8" blocks without top mount overloads. If your vehicle is equipped with the factory 3.71" block or top mounted overloads, a longer rear u-bolt will be required and is available from us. Please refer to the option's list or call our technical support line for additional details.