Fits: 2011 thru 2023 Chevy Silverado/GMC Sierra 2500HD/3500HD LML/L5P Duramax Diesel 

ReadyLIFT OEM-style rear block kits are available for the 2011-2023 GM 2500HD/3500HD trucks. These Rear Block Kits include two (2) Rear Blocks, four (4) E-Coated U-Bolts, eight (8) Nuts and Washers and will safely lift the rear of your 2WD and 4WD 8-lug truck.  Based on OEM designs and never made out of light weight extrusions, these 5" GM Blocks are made from cast iron just like the factory blocks, ensuring maximum strength and reliability.  ReadyLIFT Block Kits will put a slight rake back in your truck for hauling or towing and are designed to work with your ReadyLIFT Suspension Leveling Kit. A 5" tall rear block kit is ideal for truck owners who wants to add more rake to accomodate for extra weight added to the bed. Like all ReadyLIFT products these block kits come with a Lifetime Warranty.

Features: 

• 5" Tall rear block kit
• Cast Iron construction
• E-coated finish
• Includes new longer u-bolts and hardware.

Includes: 

• One pair of cast iron OEM style rear lift blocks
• Longer u-bolts and hardware

Notes: 

• Longer shocks will be required if you do not currently already have longer rear shocks.