ReadyLIFT 4.0" Flat Rear Block Kit | 2017–2026 Ford F-250 Super Duty 4WD
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Before ordering, verify your vehicle details, current setup, and SKU with OFAS fitment support so your upgrade matches your build.
Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
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
| Spec | Detail |
|---|---|
| Block Height | 4.0" Flat |
| Block Construction | OEM-style fabricated steel with integrated bump stop landing pads |
| Driveline Spacer | Billet, included |
| U-Bolts | 4x long e-coated U-bolts with nuts and washers |
| Driveshaft Compatibility | 2-piece driveshaft only |
| Warranty | ReadyLIFT Limited Lifetime Warranty |
| SKU | 66-2741 |
| Manufacturer | ReadyLIFT |
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.