ReadyLIFT 5.0" OEM-Style Cast Iron Rear Block Kit | 2011–2016 Ford F-250/F-350 Super Duty 2WD/4WD SRW 1-Piece Driveshaft

ReadyLIFT 5.0" OEM-Style Cast Iron Rear Block Kit | 2011–2016 Ford F-250/F-350 Super Duty 2WD/4WD SRW 1-Piece Driveshaft

⚠️ Single Rear Wheel (SRW) trucks with 1-piece driveshaft only. Not for Dual Rear Wheel (DRW) configurations. Not compatible with aftermarket or factory air spring/load leveling kits attached to bump stop tangs.

Is This for You?
You're running a 2011–2016 Ford F-250 or F-350 Super Duty — 2WD or 4WD, single rear wheel, 1-piece driveshaft — and you need 5" of rear lift to match a front lift kit, restore towing rake, or increase rear load capacity. The ReadyLIFT 66-2025 is the OEM-style cast iron solution — never made from lightweight extrusions — with integrated OEM-style bump stop landings, 16.5" E-coated U-bolts, and a Limited Lifetime Warranty. Actual lift height will vary depending on what factory block your truck has.

The Result
Two OEM-style cast iron 5.0" rear lift blocks with integrated bump stop landings deliver up to 5.0" of rear lift on 2011–2016 Ford F-250/F-350 Super Duty SRW applications with a 1-piece driveshaft. Four 16.5" E-coated U-bolts, eight nuts, and eight washers are included. Designed to work in concert with ReadyLIFT leveling and lift kits and ideal as a tow package upgrade for stock, leveled, or lifted trucks requiring additional rear lift.

Verified Fitment (OFAS Standard)
✅ Fits: 2011–2016 Ford F-250 Super Duty (2WD and 4WD — Single Rear Wheel, 1-piece driveshaft)
✅ Fits: 2011–2016 Ford F-350 Super Duty (2WD and 4WD — Single Rear Wheel, 1-piece driveshaft)
❌ Does NOT fit: Dual Rear Wheel (DRW) configurations
❌ Does NOT fit: Trucks with a 2-piece driveshaft
❌ Does NOT fit: Trucks equipped with aftermarket or factory 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 block failure
❌ Note: Actual lift height will vary depending on what factory block your truck has

Installation & Engineering Notes
All U-bolt hardware must be torqued to specification at ride height — do not torque with the suspension unloaded. Re-torque U-bolts after the first 500 miles of driving. Do not use with aftermarket or factory air spring/load leveling kits that attach to the bump stop tangs — this will void the block warranty and can cause structural failure of the bump stop tang. A professional alignment check is recommended after installation. Lifting the rear of your vehicle raises its center of gravity; exercise appropriate caution when towing or hauling.

Engineering Question: Is your 2011–2016 Ford Super Duty a Single Rear Wheel (SRW) configuration with a 1-piece driveshaft, and does your truck have any aftermarket or factory air spring/load leveling kit attached to the bump stop tangs? Confirm all three before ordering — DRW, 2-piece driveshaft, and air bag systems are not compatible with this block kit.