Fitment-checked off-road parts  ·  Manufacturer-listed exclusions shown before you buy
TRAILFORTRESSBuilt for the trail. Checked for your truck.
Cart (0)
Home / Suspension & Lift Kits / Lift Kits / Rough Country 21800
Rough CountryPart 21800 · UPC 00840269931109

3.5-Inch Lift Kit for Air Ride Chevy Tahoe 4WD (2021–2026)

$659.95MAP price
In stock — 12 available
Shipping weight: 25.5 lb.
  • Fits 2021–2026 Chevy Tahoe 4WD equipped with factory Adaptive Air Ride suspension
  • Z71 models running both Magnetic Ride Control and Adaptive Air Ride are excluded
  • Forged aluminum upper control arms with pre-installed POM ball joints
  • Rough Country lists installation at 5-6 hours; minor trimming required
  • 20-inch or larger wheels required — see the tire chart for offset and trimming notes

The Trail Fortress check

Will it fit your truck?

✓ Fits

2021–2026 Chevrolet Tahoe · 4WD
High CountryRSTZ71

✕ Does not fit

  • Z71 models equipped with Magnetic Ride Control AND Adaptive Air Ride suspension (optional upgrade)

Minor trimming is required. ONLY fits Z71 models equipped with Adaptive Air Ride suspension. 20in or larger wheels are required. Fitment on this page is based on the manufacturer’s application data.

About this kit

3.5-Inch Lift Kit, fitment-checked

Rough Country 21800 raises the 2021–2026 Chevy Tahoe 4WD by 3.5 inches while keeping the factory Adaptive Air Ride system working through all its height settings. It is built specifically for air-ride trucks: Z71 models with Adaptive Air Ride are covered, and Z71 models that also carry Magnetic Ride Control are not. Forged aluminum upper control arms with pre-installed POM ball joints do the front work.

This 3.5-inch lift kit for the 2021–2026 Chevy Tahoe 4WD is aimed squarely at trucks with factory Adaptive Air Ride, and it keeps every factory ride-height setting functional. Forged aluminum upper control arms with pre-installed POM ball joints handle the front; strut spacers and ride height sensor relocation brackets go in at both ends. Rough Country lists the job at 5-6 hours, with minor trimming needed. Wheels must be 20 inches or larger, and the published tire chart runs from 275/65R20 on factory wheels up to 33x12.50R22 with trimming. Shipping weight: 25.5 lb.

What’s in the box

Kit contents

  • 1× Forged Upper Control Arms 29501
  • 1× 3.5 Inch Kit Box 21800991

Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 21800 kit fits the vehicles shown in the fitment section above.

Specifications

Specs

BrandRough Country
Part number21800
UPC / GTIN00840269931109
Lift height3.5 in
Shipping weight25.5 lb
Country of originCN
CategorySuspension & Lift Kits › Lift Kits
Installation guideDownloadable PDF

Why buy here

The fitment-first store

Manufacturer-listed exclusions shown. We publish what a part does not fit — before you buy, not after the return.
Sourced from the application data. Fitment on this page comes from the manufacturer’s application catalog, not a copied listing.
Real install docs. The actual step-by-step guide, linked right on the page.