The Superlift 5-inch block kit for 1999–2010 Ford F-250 and F-350 Super Duty 4WD with 3 7/8-inch axle tube and top-mounted overload leaf gives a large rear lift for drivers seeking major stance change and increased tire clearance while maintaining overload hardware. It includes two cast iron blocks, four U-bolts and all nuts and washers necessary for installation, and is covered by a limited lifetime warranty.
Superlift 99-10 Ford F-250 SuperDuty 5in Block Kit w/ 3 7/8 AxleTube & Top Mounted Overload Leaf