Product Details
The ReadyLift 3" Rear Block Kit is made for the 1999-2024 GMC Sierra 1500 and raises the rear of the truck.
ReadyLIFT OEM-style rear block kits are available for model specific applications. These Rear Block Kits include two (2) 3" Rear Blocks, four (4) E-Coated U-Bolts, eight (8) Nuts and Washers and will safely lift the rear of your truck an additional 1" to 3" depending on the application. Based on OEM designs and never made out of light weight extrusions, our 3" GM Blocks are made from cast iron and have anti-rotation ears built-in.
Fits 1999-2021 classic and current body style 6-lug model GM trucks. Models with 1.25" OEM blocks will want to take advantage of the additional 1.75" of lift for towing and hauling, particularly when using a front leveling kit. 1999-2006 4WD trucks will replace the factory 2" block for 1" of additional lift. This kit eliminates the dangers of having to stack blocks which may be illegal in some states.
Features
- OEM style cast iron rear lift blocks for a durable and reliable lift
- Includes new U-bolts for easy installation
- Can provide additional clearance for larger tires and improved ground clearance
- Shock extensions may be needed depending on application for proper suspension alignment and performance
Installation Instructions
ReadyLIFT installation instructions (PDF)
Specifications
| Part Number | 66-3003 |
| Part Name | ReadyLift 3" Rear Block Kit |
| Vehicle | 1999-2024 GMC Sierra 1500 |
| Install Time | 1 Hour |
| Weight | 23.20 lb |
| UPC | 893131001301 |
| Notes | ReadyLIFT application: 3" Rear Block Kit, GM Silverado & Sierra 1500 6-lug 1999-2024. |

