The MaxTrac set of square 9/16" U-bolts for 2009–2018 Ford F-150 2WD fits 3–4 inch rear lift blocks and is supplied with thick nuts and washers. These hardware sets secure the axle to lift blocks in higher rear lift applications and are specified to match dimensions commonly used on F-150 two-wheel-drive rear installations requiring 3"–4" blocks.
MaxTrac 09-18 Ford F-150 2WD Rear U-Bolts for 3in/4in Lift Blocks - Square - Set of 4