4 Inch Lift Kit | AT4/Trailboss | Chevy/GMC 1500 (19-23)

GM’s 2019 silverado and sierra features an impressive all-new design that’s built from the ground up, with aggressive angles and head-turning stylings that fit in beautifully when transformed with Rough Country’s 4in Suspension Lift for Trailboss / AT4 models.

This kit lifts and levels your vehicle for a commanding stance and enough clearance to run 35×12.50 tires on 10in wide wheels. Rough Country has engineered this kit to provide optimal suspension geometry while retaining the factory ride quality, giving you enhanced off-road capabilities without sacrificing the handling and smooth ride that makes this truck so impressive.

Rough Country’s 4in Suspension lift retains the stock track width, allowing for up to a 10in wide wheel with 4.5in backspacing. Each kit includes front and rear crossmembers and a skid plate for enhanced chassis strength as well as cast steel knuckles for incredible durability and performance. Includes Rough Country’s Lifetime Replacement Guarantee!


    • Lifts and levels the vehicle from front to rear
    • High clearance crossmember design for optimal suspension geometry
    • Includes cast knuckles for extreme durability
    • Retains stock track width
    • No strut disassembly required
    • No differential trimming required!
    • 100% precision laser cut materials using the latest computer aided design process.
    • Fabricated blocks are stronger and offer a longer lifespan than cast blocks.
    • Includes application valved N3 series shock absorbers which offer the best in balanced performance for on and off-road use.



  • Includes pre-loaded coil
  • Maintains smooth, factory-like ride
  • Increased ground clearance
  • Engineered for lifted applications
  • Infinitely Variable Damping
  • Leak-proof piston seal
  • Massive 1 3/8in Bore
  • Silver powder coat finish
  • 3-year Manufacturer’s Warranty




  • Monotube design
  • Internal floating piston
  • Nitrogen-charged
  • 46mm high-flow piston
  • Fast heat dissipation
  • 36kN Tensile Strength
  • Mounts inverted
  • T6061 brushed aluminum body
  • 3-year Manufacturer’s Warranty




  • 8-Stage Adjustable Damping
  • Monotube Design
  • Nitrogen-charged
  • Massive 2.5in Piston
  • 22mm Chrome-Hardened Piston Rod
  • 3-Stage Seal System
  • Heat-Treated, Alloy Bearing
  • Honed Steel Body
  • 3-year Manufacturer’s Warranty



    • Does NOT fit GMC Denali models with Magnetic Ride Control.
    • Does NOT fit models equipped with Multimatic DSSV suspension. (AT4X)
    • Does NOT fit models with two piece rear driveshaft.
    • Does NOT fit 2019 “Classic” models (2018 body style)
    • ONLY fit Trailboss models (Chevy)
    • ONLY fits AT4 models (GMC)
    • Does NOT fit standard models or other trims (GMC)
    • Does NOT fit models with equipped with composite leaf springs.
    • Requires cutting and drilling.


  • Does NOT fit factory wheels
  • 20-inch or larger aftermarket wheels are required.
  • Wheels must feature 4.5in backspacing to fit
  • Please test fit wheels prior to installation
  • Must verify compatibility of the aftermarket wheel with the 2019 and up GM larger brake caliper system.
  • Some aftermarket wheels may require .25″ wheel spacer #1065.