The Superlift 2.5-inch block kit for 1999–2010 Ford F-250 and F-350 Super Duty 4WD with 3 5/8-inch axle tube provides a rear lift option when top-mounted overload leaf is not present. It supplies a straightforward height change for improved stance and tire fitment. The kit includes two cast iron blocks, four U-bolts and the nuts and washers required for installation and carries a limited lifetime warranty.
Superlift 99-10 Ford F-250 SuperDuty 2.5in Block Kit w/ 3 5/8 AxleTube w/o Top Mounted Overload Leaf