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4" 2019 GM 1500 Trail Boss / AT4 4WD Lift Kit by Rough Country


Rough Country 4 inch Suspension Lift Kit

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Item Numberrsc_27530
Manufacturer Part Number27530

GM’s 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 35x12.50 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
  • 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
Tire Wheel Backspacing Offset
35x12.50R20 20x10 4.5in -24mm
*35x12.50R20 20x10 4.5in -18mm
35x12.50R20 20x9 4.5in -12mm
*35x12.50R20 20x9 4.5in -6mm
295/65R20 20x10 4.5in -24mm
*295/65R20 20x10 4.5in -18mm
295/65R20 20x9 4.5in -12mm
*295/65R20 20x9 4.5in -6mm

Does not fit factory wheels
Aftermarket wheels must be 20" or larger
*Requires 1/4 inch Wheel Spacer

Important NotesDoes NOT fit GMC Denali models with Magnetic Ride Control.
Only fits Trailboss / AT4 models.
Does not fit standard models or other trims.
Requires cutting and drilling
Tire and Wheel Details
20" or larger aftermarket wheels are required
Wheels must feature 4.5 inch backspacing to fit
Please test fit wheels prior to installation
ManufacturerRough Country
MakeChevy, GMC
Model1500 Pickup, 1/2 Ton Pickup
Year Spans2019
Lift Height4 inch

WARNINGCancer and Reproductive Harm.

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