ReadyLIFT® leveling kits are the fastest, safest, least expensive way to bring the front of a Sierra level with the rear. Our torsion keys are designed to grab the “FLAT” of the torsion bar for a tighter, sturdier fit. CNC machined adjuster bolt pockets and 10.9 grade metric hardware allow for proper bolt seating, ensuring an accurate and safe adjustment. Only ReadyLift® torsion keys are forged, making them 25% stronger than OEM and primed to last the life of your vehicle.
The adjustable 66-3050 torsion key provides 2” to 3” of lift and gives clearance to add up to 33" wheels and tires to the 2wd & 4wd 2000-2010 Silverado 1500/2500 HD 8-lug. ReadyLift® keys are guaranteed never to affect the OEM ride and will not add more pressure on the stock suspension components. Through our innovative engineering,
ReadyLIFT® kits cost thousands less than a traditional lift kit and install in about 1-2 hours.
For those who install heavy front items such as snow plows, the ReadyLift torsion keys will allow you to adjust your suspension to compensate for the extra weight, as well as give you the opportunity to not only increase the lift amont, but adjust it to suit while maintaining your factory ride.
ReadyLIFT® Lifetime Warranty Included! All ReadyLift® products are backed by a lifetime warranty for as long as you own your vehicle and includes all necessary parts, hardware, detailed installation instructions, and two color decals.
For information about tire and wheel sizes please visit the ReadyLIFT Tire Sizing and Calculator Page

ReadyLIFT® Features
LEARN MORE ABOUT HOW TORSION KEYS WORK
LEARN MORE: FORGED READYLIFT KEYS vs. CHEAP CAST KEYS
Also Recommended--ReadyLIFT® Tow Package Rear Lift Blocks
ReadyLIFT® OEM style rear block kits are now available for model specific applications. These Rear Block Kits include (2) Rear Blocks, (4) E-Coated U-Bolts, (8) Nuts and Washers and will safely lift the rear of your 2000-2010 2wd and 4wd 8-lug GM trucks 1" (66-3051) or 2" (66-3052) when using our rear lift block kits. Based on OEM designs and never made out of light weight extrusions our GM Blocks are made from cast iron. ReadyLIFT® Block Kits will put a slight rake back in your Truck for hauling or towing and are designed to work in concert with your ReadyLIFT® Suspension Leveling Kit. Like all ReadyLIFT® products these block kits come with our Lifetime Warranty.
Chevy 1" Rear Lift Blocks
Chevy 2" Rear Lift Blocks

ReadyLIFT Block Features
- OEM style design
- Made from cast iron, not light weight extrusions
- Built in locator pin, not pressed in steel pins into aluminum which can wear out
- Puts a slight rake back in your truck for towing and hauling
- Lifetime Warranty
Also Available: ReadyLift GM Tie Rod Reinforcement Kit

The GM OEM tie rods are slender and can weaken, bend or even break during aggressive off roading or harsh driving with heavy over-sized tires and wheels. ReadyLIFT developed a precision CNC-machined heavy-duty steel reinforcement sleeve that threads onto your OEM tie rods to provide strong support over the length of the tie rod. Easy to install.