ReadyLift 44-39615 6" Big Lift Kit

The ReadyLift 44-39615 6" Big Lift Kit was specifically designed to lift GM Silverado/Sierra 1500 2WD/4WD High Country & Denali Models with the Adaptive Ride Control suspension. The front skid plate and front & rear cross members featured in this lift kit are built with 3/16” boxed steel plate. The differential drop brackets have a dual gusseted middle rib with a boxed center rib that is manufactured with 1/4” plate steel to handle the torsional bending of the front differential.

Featuring heavy-duty angled and offset top mount strut extensions that realign the struts, this Big Lift Kit will improve shock performance and decrease wear. A custom-designed lower mount strut pre-load spacer offers a slight boost in spring rate to help manage the bigger wheels and tires that you can install. To lift the back of the truck, 5" rear blocks with integrated bump stop landings are built with fabricated steel. To retain full functional use of the factory ARC rear shocks, rear shock extensions are included.

Max tire with no trimming:  20x9 0 offset and 35x12.50 tires.

Max with trimming: 20x10 -18 offset - 35x12.50 or 325/60R20 - Trimming requirements for larger than recommended wheel/tire include front valance, front felt liner edge, rear felt liner edge and front rear well edge mud flap.

Use of the Auto 4 Hi feature is not recommended.

Only compatible with Adaptive Ride Control suspension vehicles.

Diesel applications may require a small modification to the transmission line bracket. 

This kit is not compatible with vehicles equipped with rear composite mono-leaf springs.

This lift lit will require the ReadyLift 67-35150UB U-Bolt Kit to fit late model 2024 or 2025 applications that have round U-bolts.(See Add-Ons)