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K1055 | GM 4 Inch Suspension Lift Kit - 4.0 F / 0 R

Chevrolet, GMC
2011-2018 Silverado 2500 HD, 3500 HD
2011-2018 Sierra 2500 HD, 3500 HD

Limited Supply: only 2 remaining
Was: $1,314.95
Sale: $1,095.95
Save: 17%
Save: $219.00


Our 4” Ultimate System provides less lift than our 6” RTS™ system but still allows use of 33” or 35” tall tires with cutting for street and offroad use. We have developed this system utilizing replacement upper control arms constructed of 1.50” OD .120” thick wall DOM tubing that attaches to heavy duty Fabtech ductile iron steering knuckles. The factory torsion bars remain in the stock position and use new forged adjusting keys to provide the proper amount of lift.

Upper Control Arms Built With Same Materials Found On Trophy Trucks
.120" Wall 4130 Chromoly Tubing. 1.50" OD
.250" wall DOM Bushing Barrels
Extended Range Ball Joints
Ductile Iron Steering Knuckles
Forged Torsion Bar Keys

Vehicle Applications

2011-2018 Chevrolet Silverado 2500 HD 4wd
2011-2018 Chevrolet Silverado 3500 HD 4wd
2011-2018 GMC Sierra 2500 HD 4wd
2011-2018 GMC Sierra 3500 HD 4wd

Tires & Wheels

Tire Size – 33/12.50R18 Wheel Size – 18×9 w/ 5 3/4in BS w/minor trimming
Tire Size – 33/12.50R20 Wheel Size – 20×9 w/ 5 3/4in BS w/minor trimming
Tire Size – 35/13.50R18 Wheel Size – 18×9 w/ 5 3/4in BS w/fenderwell cutting
Tire Size – 35/13.50R20 Wheel Size – 20×9 w/ 5 3/4in BS w/fenderwell cutting


Shipping Information

  • Item Requires Shipping
  • 145.0 lbs.
  • W22.0000” x H20.0000” x L32.0000”


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