ReadyLift 5" Tall Flat Block (66-2751) for 17-20 Ford F-250 Super Duty 4WD (2-Piece Drive Shaft)

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ReadyLIFT OEM-style rear block kits are now available for 2017-2020 Ford Super Duty model specific applications. Based on OEM designs and never made out of light weight extrusions, our 5" 2017-2020 Ford Super Duty Tapered Rear Blocks have Integrated OEM style bump stops. ReadyLIFT Block Kits will put a slight rake back in your truck for hauling or towing and are designed to work with your ReadyLIFT 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 ReadyLIFT products these block kits come with our Limited Lifetime Warranty.


  • 5" Block Kit for 2017-2020 Ford Super Duty F250 4WD
  • OEM style fabricated steel construction flat block with bump stop landing pads, drive line spacer and new longer u-bolts
  • Manufactured to meet or exceed strict quality requirements
  • Designed to deliver trouble free, consistent performance
  • Limited Lifetime Warranty


  • Lift/Drop Height: 5"
  • Material: Cast Iron
  • Includes Spacers: Yes
  • Includes Wedge: Yes
  • Includes Hardware: Yes
  • Estimated Install Time (Hours): 1
  • WARNING CA Proposition 65: WARNING Cancer; Birth Defects; and Reproductive Harm


  • 2 - Rear blocks
  • Billet drive line spacer
  • 4 - Long E-coated U-bolt
  • 8 - Nuts and washers


  • For use with trucks with 2-piece drive shaft
  • 66-2751 5" block is for use on 2017-2020 Ford F250 Super Duty 4WD trucks with 2-piece drive shaft
  • Lift height will vary depending on what factory block your truck has
  • Not for use on 2019-UP F350
  • The lift blocks in this kit are not designed to work with aftermarket or factory add-on air spring/load leveling kits that attach to the bump stop tangs
  • Use of this type of air bag system will void all block warranties and can cause failure of the block bump stop tang