4" inch Rear Lift Block for 2-Piece Driveshafts

Features:

• 4" rear lift for extra load support
• Compatible with 2017–2025 F-250 4WD
• Fits 2017–2018 F-350 4WD only
• Designed for 2-piece driveshaft trucks
• Heavy-duty cast steel block construction
• Integrated OEM-style bump stop landings
• Includes billet driveline spacer
• Kit comes with U-bolts, nuts, and washers
• E-coated finish resists corrosion
• Simple bolt-on installation, no cutting needed
• Not for use with air spring systems
• Limited Lifetime Warranty included

Boost Rear Ride Confidence With ReadyLift’s 4 Inch Block Kit

If you’re hauling heavy loads or towing regularly with your Super Duty, you’ve probably noticed a little rear-end sag. ReadyLift’s 4 inch rear block kit is the fix you’ve been looking for. It’s built to add a noticeable amount of rake, restoring a level stance when your truck is under pressure from gear, trailers, or fifth wheels. Designed specifically for 2017–2025 F-250 and select F-350 models, this kit helps eliminate squat so your truck rides safer and looks better when loaded. Unlike those universal blocks that never seem to fit right, this setup was made to match Ford’s factory geometry and installs clean with no cutting or weird modifications. You’ll get added clearance, improved towing posture, and the confidence to haul without compromise. It’s a simple upgrade that adds a big boost to your daily capability.

Built With Purpose For Two Piece Driveshaft Super Dutys

ReadyLift didn’t cut corners with the construction of their 66-2741 4 inch rear lift block kit. Each block is made from cast steel, precision formed to fit Ford’s leaf spring perches and finished with a durable e-coat to fight corrosion over time. The blocks feature integrated bump stop landings to help preserve proper suspension function under load. Included in the kit are long e-coated U-bolts, billet driveline spacer, and all the hardware needed for a complete install. It’s important to note this kit is specifically engineered for 4WD trucks with two-piece driveshafts only and won’t fit single-piece configurations or dually models without custom U-bolts. Additionally, it should not be used with any air spring or load-leveling systems that mount to the bump stop tangs. ReadyLift backs it all with a limited lifetime warranty, giving you peace of mind to use your truck the way it was meant to be used.

Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 Ford F250 Super Duty 4WD/SRW w/ 2-Piece Driveshaft

Notes:

• Confirmed fitment for 2017–2025 F-250 4WD with 2-piece driveshaft
• Only fits 2017–2018 F-350 4WD with 2-piece driveshaft
• Not compatible with 2019+ F-350 models
• Designed for use on single rear wheel trucks only
• Not intended for vehicles with air spring or load-leveling kits
• Will not fit dually trucks without custom U-bolts
• Restores factory rake for towing and hauling stability
• Lift height may vary based on factory block size
• Includes all required hardware for complete installation
• No cutting or drilling required for install
• Lifetime warranty from ReadyLift for peace of mind