Product Details
The ReadyLift 4" SST2.1 Premium Suspension System is made for the 2019-2024 GMC Sierra 1500.
Your Truck Deserves the Best-Not Just Another Lift Kit. ReadyLIFT's all-new 4" SST2.1 Lift Kit doesn't just raise your truck-it redefines what's possible in ride quality, strength, and capability. At the core of this industry-leading system are our all-new Falcon 2.1 Series front struts and rear shocks-a game-changer in suspension technology.
Unlike standard lift kits that compromise ride quality, the Falcon Performance Shocks deliver unmatched comfort, control, handling, and design, whether you're cruising the highway, conquering the trails, or hauling serious weight. This isn't just an upgrade, it's a transformation. Get the best in performance, durability, and versatility with ReadyLIFT's 4" SST2.1 Suspension System. Don't just lift your truck-elevate your driving experience.
Features
- Adjustable Suspension for Any Situation
- · Use of Auto 4 Hi feature is not recommended
- · Have not tested on ZR2 and AT4X
- · Not compatible for 2019 classic body LD, Limited or Super Cruise
- · Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT
- · Vehicles with ARC would need an aftermarket bypass product to work. ReadyLIFT does not support this function
- · Vehicles with Mono-leaf rear springs require 67-39530UB. Before ordering a ReadyLIFT GM1500 Lift Kit, please check the rear leaf spring for kit compatibility.
- Easily switch between Sport, Moderate Tow/Haul, and Heavy Tow/Haul with our 3-position Fast-Adjust Falcon 2.1 Shocks, ensuring your ride is optimized for whatever the road (or lack of it) throws at you.
Installation Instructions
ReadyLIFT installation instructions (PDF)
Specifications
| Part Number | 62-39440 |
| Part Name | ReadyLift 4" SST2.1 Premium Suspension System |
| Vehicle | 2019-2024 GMC Sierra 1500 |
| Placement | Front & Rear |
| Lift - Rear | 2.5" |
| Max Tire Size | 39" |
| Shocks Included | Yes |
| Install Time | 5+ Hours |
| Weight | 175.00 lb |
| UPC | 194933366477 |
| Notes | ReadyLIFT application: 2019-2024 GMC/Chevy Sierra/Silverado 1500 4" SST2.1 Premium Suspension System. |






