Suspension Lift Kit

The ReadyLIFT 6" Big Lift Kit is designed for the 2019-2021 Chevy Silverado and GMC Sierra 1500 trucks, excluding Trail Boss, ZR2, or AT4 / AT4X models. This kit, with part number 44-39600, features advanced engineering for exceptional ride quality and handling. Its components include boxed steel front/rear cross members and a 3/16" thick steel front skid plate. The 1/4-inch steel differential drop brackets are double gusseted with a boxed center rib, ensuring durability against torsional twisting of the front differential. The kit's standout feature is its heavy-duty, angled, and offset top mount strut extensions that realign struts for optimal shock performance and minimal wear. A lower mount strut pre-load spacer increases spring rate for handling larger wheels and tires. The rear lift comprises 5" tall fabricated steel blocks with integrated bump stop landings and Falcon 1.1 Monotube rear shocks. After extensive testing, this kit is proven to enhance the ride of GM 1500 trucks. It allows for up to 35×12.50 tires on 20×9 wheels with 0 offset without trimming, and larger sizes with modifications. However, it's NOT compatible with Adaptive Ride Control, Multimatic systems, or trucks with rear composite mono-leaf springs (identifiable by round U-bolts); it works only with traditional steel leaf springs (square U-bolts). Key features include maintaining factory ride and handling, top mount strut extensions for factory geometry, 3/16-inch thick steel plate cross members and skid plate, anti-torsion differential drop brackets, fabricated steel rear lift blocks with bump stop landings, Falcon 1.1 Monotube rear shocks, and a ReadyGuard Powertrain Warranty. Note: Use of Auto 4 Hi is not recommended with this kit.

Additional Attributes:

GTIN: 00194933167265
Shocks Included: Yes
California Proposition 65: WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/product.
Fitment: Direct Fitment
Front Lift Component: Spacer
Front Lift Height: 6 Inches
Front or Rear: Front and Rear
Front Shocks: None
Install Difficulty: Difficult Requires Professional Installation
Installation Time: 5+ Hours
Max Tire Size: 35 Inch
Prop65 Chem1: Di(2-ethylhexyl)phthalate (DEHP)
Rear Lift Component: Block
Rear Lift Height: 6 Inches
Rear Shocks: Falcon 1.1 Monotube

Extended Information:

Life Cycle Status: Available To Order

Packaging:

Quantity of Each: 1.0
Package UOM: EA
Dimension: 48.0000 x 25.0000 x 13.0000 inches
Weight: 314.0000 PG