This ReadyLift 44-30520 5-6 inch lift kit for the GMC Sierra 2500HD / 3500HD features an adjustable design allowing you to adjust lift height from 5-6 inches. This premium ReadyLift kit is specifically designed to provide a high quality lift while offering great off-road strength while maintaining factory ride quality on the road. This kit is packaged with Falcon 1.1 or Bilstein 5100 Monotube shocks, giving you a premium ride. 

Featuring precision laser cut and CNC formed sub frame assemblies that directly bolt on, custom formed modular iron knuckles are engineered to provide perfect geometry, ride quality and handling performance after installation. A integrated differential drop bracket ensures correct CV axle angles on 4x4 applications, providing maximum performance in 4wd mode. Adjust front ride height by utilizing the factory torsion keys with ReadyLift's torsion bar drop brackets. Rear Lift is achieved by utilizing OEM quality cast iron rear blocks, tough steel bump stop extensions, skid plate and rear sway bar end links. This kit provides the ability to use 20" stock wheels w/4.75" - 5.5" backspacing. Stock 17" or 18" wheels cannot be run on this system due to clearance.

Features and Benefits:

• Made in the USA
• Allows for use of OEM Wheels
• Includes Falcon 1.1 Monotube or Bilstein 5100 Series Shocks
• Does NOT increase front track width
• Allows for up to 35" tires
• 35x12.50 for no rub on a 9" wide wheel with -6 offset
  • Fits 35x12.5R18
  • Fits 35x12.5R20
• Uses OEM Factory Torsion Keys