Sierra 1500 2025 GMC 4WD/2WD 2.25" Rear Block Kit (1.25" actual lift) by ReadyLift

The ReadyLIFT 26-35225 2.25" Rear Block Kit for the GMC Sierra 1500 is a durable, OEM-style solution designed to safely increase rear ride height for improved stance, towing stability, and load-handling capability. This kit replaces the factory 1" rear block, resulting in a total net lift of 1.25"—ideal for restoring a slight rake when running a front leveling kit or when hauling and towing heavy loads.

Built from heavy-duty cast iron—not lightweight extrusions—these blocks feature integrated anti-rotation ears for secure, OEM-grade fitment. The kit includes two 2.25" rear blocks, four E-coated U-bolts, and all required nuts and washers, ensuring a complete and reliable installation. Designed specifically for the 2025 new body style Silverado 1500 6-lug models, this setup eliminates the unsafe practice of stacking blocks, which is restricted or illegal in many states.

Whether used for towing, hauling, or achieving the right stance when paired with a leveling kit, the ReadyLIFT 2.25" Rear Block Kit delivers strength, safety, and long-lasting performance—all backed by ReadyLIFT’s Lifetime Warranty.

Features and Benefits:

• Fits GMC Sierra 1500 new body style (6-lug models)
• Replaces factory 1" block for a net rear lift of 1.25"
• Includes two 2.25" cast iron rear blocks with anti-rotation ears
• Comes with four E-coated U-bolts and all necessary nuts and washers
• OEM-style design for proper fitment and long-term durability
• Eliminates unsafe block stacking practices
• Restores a slight rake for improved towing and hauling capability
• Ideal for trucks equipped with a front leveling kit
• Enhances rear load support and stability
• Backed by ReadyLIFT’s Lifetime Warranty