Save up to $300 off w/Codes -  details


Mini Cart

Promo Banner

4" 2019-2023 Chevy Silverado 1500 Trail Boss 4wd Lift Kit by Fabtech

Brand: Fabtech | SKU: K1136 / K1136M
As low as $2,095.47 Regular Price $2,328.30

free shipping truck  FREE SHIPPING !!
on orders +$149, exclusions apply

- +
Expert Image
Trusted Experts Since 1994, Top Rated service
Got Questions? We can help!
Top Rated service
Top Rated service
Top Rated service
Top Rated service
Top Rated service
Top Rated service
Product Description
More Information

This Fabtech K1136 / K1136M 4 inch lift kit for the Chevy Silverado 1500 Trail Boss adds to the factory 2 inch lift for clearance to fit up to 35 inch tires.  This kit features all required components like heavy duty 1/4″ thick steel crossmembers that use OE style alignment cam pins that utilize the factory cams for easy adjustment. Triple front diff mounts reposition the differential for vibration free operation at high speed. The near stock track width keeps the tires under the fenders for a clean appearance. Fabtech’s proprietary steering knuckle geometry provides excellent lock to lock turning radius to maneuver in tight spots. The factory Trail Boss and AT4 coilover shocks are retained and relocated from the bottom to allow for full steer while achieving 4″ of lift.

Rear lift is accomplished by removing the factory 2″ block and replacing it with a 5″ block and u-bolt system.

Top Features and Benefits

  • Allows use of 35 inch tires
  • 4" lift kit works with Trail Boss factory 2 inch lift kit (total of 6 inches)
  • Choose from Fabtech Performance shocks or Stealth monotube shocks
  • Heavy duty high arched crossmembers for better ground clearance
  • Ductile iron steering knuckles
  • Rear blocks and ubolts
  • Heavy duty front differential skid plate
  • Limited Lifetime Warranty

Recommended Tires and Wheels

  • Tire Size - 35/12.50R18 Wheel Size - 18x9 w/ 5" BS w/ minor tirmming
  • Tire Size - 295/70R18 Wheel Size - 18x9 w/ 5" BS w/ minor trimming
  • Tire Size - 35/1250R20 Wheel Size - 20x9 w/ 5" BS w/ minor trimming
  • Tire Size - 295/65R20 Wheel Size - 20x9 w/ 5" BS w/ minor trimming


Product Highlights

Steering Knuckles
Included are two heavy duty steering knuckles. These CNC-machined ductile iron steering knuckles replace the lighter duty factory knuckles. Powder coated to survive the elements. Providing a safe and stable method to correct steering geometry on a lifted vehicle.
Fabtech Peformance Shocks
Affordable Option: These shocks absorber uses twin tube hydraulic construction with 9 stage valving for great ride control. Designed to function great on and off-road using heavy duty components like a 9/16 inch piston rod and 1 3/8 inch OD piston. Featuring a classic white finish.
Fabtech Stealth Shocks
Mid-Range Option: These all black monotube gas shocks feature a 50mm OD seamless steel body with a distinct raised metal nameplate.  A 46mm high flow piston separates gas from oil for a consistant ride. Designed to give a superior ride on and off-road while looking great.
Important Notes1. Can not use OEM wheel and tire.
2. Fits crew cab, short bed models only.
3. Will not fit models equipped with adaptive ride control.
Vehicle Fitment
ModelSilverado 1500 Trail Boss
Year Fitment2023, 2022, 2021, 2020, 2019
Tech Specs
Manufacturer Part NumberK1136 / K1136M
Item Numberfab_k1136-k1136m
Product LineLift Kits
Lift Height4 inch


Warning - Cancer and Reproductive HarmWARNINGCancer and Reproductive Harm.