2011-2025 GM HD 1" Rear Block Kit (26-30100)

The ReadyLIFT OEM style 1-inch Rear Block Kit is available for 2011-2025 GM 2500/3500 HD single rear wheel pickups. These kits are designed to safely lift the rear of your 2WD and 4WD 8-lug Single Rear Wheel GM trucks with a trailer package spring by 1 inch. The 1-inch GM Blocks are made from cast iron, just like the factory blocks, which ensures maximum strength and reliability, as they are based on OEM designs and never made from lightweight extrusions. Installing this block kit will put a slight rake back into your truck, which is beneficial for hauling or towing, and the kit is designed to work seamlessly with any ReadyLIFT Suspension Leveling Kit.

Features

• Provides 1 inch of rear lift.
• OEM style blocks are made from cast iron for maximum strength and reliability.
• Safely lifts the rear of the truck.
• Puts a slight rake back in the truck for hauling or towing.
• Designed to work with a ReadyLIFT Suspension Leveling Kit.
• Comes with a Lifetime Warranty.

Notes

• The stock shocks are compatible with this kit as they are good for up to 2 inches of lift.
• Vehicle alignment, headlamp aim, and Advanced Driver Assistance Systems (ADAS) must be checked and adjusted after product installation.

Compatibility Notes

• Available for 2011-2025 GM 2500/3500 HD single rear wheel pickups.
• Fits 2WD and 4WD 8-lug Single Rear Wheel GM trucks with trailer package springs.

Tire Fitment

• Tire fitment information is not explicitly provided for this rear block kit, as it is generally used in conjunction with a leveling kit which determines maximum tire size.

Specs

• Rear Lift: 1 inch.
  
• Block Material: OEM style cast iron.
  
• Kit Contents: Two 1-inch Rear Blocks, four E-Coated U-Bolts (14.5" length, Grade 8), eight Nuts, and Washers.