Ready LIFT OEM-style rear block kits are now available for 2017-2018 Ford Super Duty model specific applications. These 4.0" fabricated steel Tapered Rear Block Kits include two (2) rear blocks, four (4) long e-coated U-bolts and eight (8) nuts and washers. Based on OEM designs and never made out of light weight extrusions, our 4" 2017-2018 Ford Super Duty Tapered Rear Blocks have Integrated OEM style bump stops. Ready LIFT Block Kits will put a slight rake back in your truck for hauling or towing and are designed to work with your Ready LIFT Suspension Leveling Kit. In fact, these blocks are the ideal Tow Package upgrade for not only for stock height vehicles but lifted or leveled trucks too! Like all Ready LIFT products these block kits come with our Limited Lifetime Warranty.