ReadyLIFT 4.0" Flat Rear Block Kit | 2017–2026 Ford F-250 Super Duty 4WD

ReadyLIFT 4.0" Flat Rear Block Kit | 2017–2026 Ford F-250 Super Duty 4WD

Is This for You?
You're running a 2017–2026 Ford F-250 Super Duty 4WD with a 2-piece driveshaft and you need to put rake back in your truck for towing and hauling — or you're pairing a rear block with an existing leveling kit to achieve a level, lifted stance all the way around. You need OEM-quality fabricated steel construction, not lightweight extrusions that flex under load. The ReadyLIFT 66-2741 is a model-specific, OEM-style flat rear block kit built to the same design standards as the factory suspension — with integrated bump stop landing pads, a billet driveline spacer, and new longer e-coated U-bolts included.

The Result
Four inches of rear lift via two OEM-style fabricated steel flat rear blocks with integrated bump stop landing pads — never made from lightweight extrusions. A billet driveline spacer corrects the driveshaft angle introduced by the block height, maintaining proper driveline geometry on 2-piece driveshaft applications. Four new long e-coated U-bolts with nuts and washers are included for a complete, clean installation. The result is a purposeful rake that improves towing stance, pairs perfectly with a ReadyLIFT leveling kit, and carries a Limited Lifetime Warranty.

Verified Fitment (OFAS Standard)
✅ Fits: 2017–2026 Ford F-250 Super Duty 4WD (2-piece driveshaft)
❌ Does NOT fit: 2019–2026 Ford F-350 Super Duty — this block is F-250 specific
❌ Does NOT fit: 1-piece driveshaft applications
❌ Does NOT fit: Trucks equipped with aftermarket or factory add-on air spring/load leveling kits that attach to the bump stop tangs — use of air bag systems on this block will void all warranties and can cause block bump stop tang failure
❌ Note: Lift height will vary depending on what factory block your truck has from the factory

Wheel & Tire Fitment
No wheel or tire restrictions specific to this component. Rear block height affects overall vehicle rake and stance — verify your total lift height and tire clearance with your existing front lift configuration before ordering.

Installation & Engineering Notes
This is a bolt-on rear block kit requiring no cutting or welding. U-bolts must be torqued to OEM specification at ride height. A professional 4-wheel alignment is recommended after installation to confirm ride height and geometry. Do not use this block kit with aftermarket or factory add-on air spring/load leveling systems that attach to the bump stop tangs — doing so will void the warranty and risks structural failure of the bump stop tang. Lifting your vehicle raises its center of gravity; exercise appropriate caution when towing or hauling. All Advanced Driver Assistance Systems (ADAS) including Ford Co-Pilot360 and automatic headlight leveling should be verified after any suspension height change.

Engineering Question: Does your 2017–2026 F-250 Super Duty have a 1-piece or 2-piece driveshaft, and does it have a factory rear block installed? Confirm your driveshaft configuration and factory block height before ordering — this kit is engineered for 2-piece driveshaft applications only, and final lift height will vary based on your factory block.