Superlift 2019+ GM AT4 & TrailBoss 4" Lift Kit # K299

Superlift K299 4" Suspension System is designed to fit 2019, 2020, 2021 and 2022 model year Chevrolet Silverado 1500 TrailBoss and GMC Sierra 1500 AT4 trucks. This 4 inch Lift kit does not work with GM 1500 Models that include Adaptive Ride Control (ARC). This kit includes front knuckles, front strut spacers, ¼” plate steel control arm cross-members, differential drops, differential skid plate, fabricated rear blocks, u-bolts and Superlift Shadow Series rear shock absorbers. All required parts are included to make sure your Chevrolet Silverado or GMC Sierra handles and performs in all conditions.

Superlift K299 Kit Features:
Designed using Original Equipment (OE) CAD data for suspension accuracy
Ductile Iron Steering Knuckle for durability
Clearance up to a 35” tire
Cross-members constructed out of ¼” plate steel.
Aligns to OEM specifications
Corrects Front to Rear factory rake for a more level stance
Anti-Wrap Fabricated Rear blocks and u-bolts for rear lift
Grade 8 Hardware
Allows for 20” or larger aftermarket wheel
Backed by Superlift Limited Lifetime Warranty

Superlift K299 Kit Benefits:
Retains OEM alignment specifications
Industry best ride quality
No excessive ball joint or steering components
CV axle angles are in the stock parameters
Maintains OEM like ride quality and handling characteristics

Important Notes - Please Read!
Factory Wheels will NOT work!
20 inch or larger aftermarket wheels are required w/ 4.5” of back spacing
Requires cutting and drilling
Does not work with GM 1500 Models that include Adaptive Ride Control (ARC)
Some minor trimming may be required in order to clear tires larger than 35”
Do Not combine with any other suspension lift
Due to GM’s larger Front Brake set up on the 2019-2010 models, check with the aftermarket wheel manufacturer for wheel compatibility.
It is highly recommended that all tire and wheel combinations should be test fitted prior to installation