Lift your GM Silverado & Sierra 1500 6-Lug with ReadyLift 3" Rear Block Kit (1999-2021).

• Heavy-duty cast-iron 3" rear blocks with integrated anti-rotation ears for a durable, secure lift.
• Includes two 3" Rear Blocks, four E-Coated U-Bolts, eight nuts and washers—everything you need for a complete, OEM-style install.
• Raises the rear 1" to 3" depending on the application; for models with 1.25" OEM blocks, adds up to an additional 1.75" of lift for towing and hauling (especially with a front leveling kit).
• Fits 1999-2021 classic and current body style 6-lug GM trucks (Silverado & Sierra 1500).
• Not compatible with rear composite mono-leaf springs; requires traditional steel leaf springs identified by square U-bolts.
• Eliminates the dangers of stacking blocks and is designed to work with ReadyLIFT Suspension Leveling Kit; Lifetime Warranty; installation time approximately 1.8 hours; note: 2019+ models may require trimming excess bolt length.