Product Details

The ReadyLift 2" Rear Block Kit (OEM Style) is made for the 2011-2024 GMC Sierra 3500 HD and raises the rear of the truck.

Based on OEM designs and never made out of light weight extrusions our 2" 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.

Features

  • GM 2600HD/3500HD OEM Style 2" Rear Lift Block Kit
  • For use only on single rear wheel 2600HD trucks with factory Trailer Package rear springs
  • Includes new longer U-bolts and hardware
  • OEM style cast iron construction

Installation Instructions

ReadyLIFT installation instructions (PDF)

Specifications
Part Number 66-3122
Part Name ReadyLift 2" Rear Block Kit (OEM Style)
Vehicle 2011-2024 GMC Sierra 3500 HD
Install Time 2 Hours
Weight 28.80 lb
UPC 804879374749
Notes ReadyLIFT application: 2" Rear Block Kit, GM Silverado / Sierra 2500/3500 HD OEM Style 2011-2024.

Vehicle fitment

This product fits the vehicles listed below.

YearMakeModelNotes
2011GMCSierra 3500 HD
2012GMCSierra 3500 HD
2013GMCSierra 3500 HD
2014GMCSierra 3500 HD
2015GMCSierra 3500 HD
2016GMCSierra 3500 HD
2017GMCSierra 3500 HD
2018GMCSierra 3500 HD
2019GMCSierra 3500 HD
2020GMCSierra 3500 HD
2021GMCSierra 3500 HD
2022GMCSierra 3500 HD
2023GMCSierra 3500 HD
2024GMCSierra 3500 HD

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