Product Details

The ReadyLift 1" Rear Block Kit (OEM Style) w/Factory Top Overloads is made for the 2011-2023 GMC Sierra 2500 HD and raises the rear of the truck.

ReadyLIFT OEM style rear block kits are available for the 2011-2023 GM 2500 HD single rear wheel pickups with the factory Trailer Package rear springs. These Rear Block Kits include two (2) 1" Rear Blocks, four (4) E-Coated U-Bolts, eight (8) Nuts and Washers and will safely lift the rear of your 2011-2023 2WD and 4WD 8-lug Single Rear Wheel GM trucks with trailer package spring 1".

Based on OEM designs and never made out of lightweight extrusions our 1" 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

  • Enhances towing capabilities
  • Made by a trusted manufacturer
  • Perfect for off-roading or heavyduty use
  • Adds a rugged and stylish look to your truck
  • Increases ground clearance
  • Maintains factory ride quality
  • 201120112023 GM 2500HD/3500HD OEM Style 1" Rear Lift Block Kit
  • Designed for use on SRW 2500HD trucks
Specifications
Part Number 66-3121
Part Name ReadyLift 1" Rear Block Kit (OEM Style) w/Factory Top Overloads
Vehicle 2011-2023 GMC Sierra 2500 HD
Install Time 2 Hours
Weight 23.00 lb
UPC 804879374732
Notes ReadyLIFT application: 1" Rear Block Kit, GM Silverado / Sierra 2500/3500 HD OEM Style W/ Factory Top Overloads 2011-2023.

Vehicle fitment

This product fits the vehicles listed below.

YearMakeModelNotes
2011GMCSierra 2500 HD
2012GMCSierra 2500 HD
2013GMCSierra 2500 HD
2014GMCSierra 2500 HD
2015GMCSierra 2500 HD
2016GMCSierra 2500 HD
2017GMCSierra 2500 HD
2018GMCSierra 2500 HD
2019GMCSierra 2500 HD
2020GMCSierra 2500 HD
2021GMCSierra 2500 HD
2022GMCSierra 2500 HD
2023GMCSierra 2500 HD

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