The ReadyLIFT 4-inch Rear Block Kit is an OEM-style tapered block system specifically designed for 2017-2025 Ford Super Duty F350/F450 Dually (DRW) trucks with a two-piece driveshaft. These 4.0-inch fabricated steel tapered blocks have Integrated OEM style bump stops and are based on OEM designs. The kit is designed to put a slight rake back into your truck for hauling or towing and includes a billet driveshaft spacer to correct the driveline geometry. This kit is an ideal Tow Package upgrade for stock, lifted, or leveled trucks.

Features

• Provides 4.0 inches of rear lift.
• OEM-style tapered blocks are made from fabricated steel.
• Includes Integrated OEM style bump stops.
• Includes a billet driveline spacer.
• Puts a slight rake back in the truck for hauling or towing.
• Designed to work with a ReadyLIFT Suspension Leveling Kit.
• Comes with a Limited Lifetime Warranty.

Notes

• Lift height will vary depending on what factory block your truck has.
• 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 an airbag system that attaches to the bump stop tang will void all block warranties.
• Vehicle alignment, headlamp aim, and Advanced Driver Assistance Systems (ADAS) must be checked and adjusted after product installation.

Compatibility Notes

• For use on 2017-2025 Ford F350/F450 Dually (DRW) Super Duty 4WD trucks.
• Specifically for use with trucks that have a two-piece drive shaft.
• Will not fit Single Rear Wheel (SRW) models, as dually blocks are different from SRW blocks.
• Fitment has not been confirmed for Cab & Chassis trucks.

Specs

• Rear Block Height: 4.0 inches.
  
• Block Material: Fabricated steel.
  
• Driveshaft Compatibility: 2-piece driveshaft.
  
• Kit Contents: Two 4.0-inch Rear Blocks, Billet Driveline Spacer, four long E-Coated U-Bolts (18.5" length), and eight Nuts and Washers.