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The Superlift 4-inch rear block kit for 1999–2010 Ford F-250 and F-350 Super Duty 4WD with 3 5/8-inch axle tube (without top-mounted overload leaf) raises the rear by 4 inches. The kit includes two cast-iron blocks, four U-bolts and all nuts and washers required for installation and is backed by Superlift’s limited lifetime warranty. It’s a robust option for owners seeking a substantial rear lift on compatible Super Duty trucks.
Superlift 99-10 Ford F-250 SuperDuty 4in Block Kit w/ 3 5/8 AxleTube w/o Top Mounted Overload Leaf
