1.5-Inch Spacer Air Spring Kit with Compressor for GM 2500/3500 HD

Name: 1.5-Inch Spacer Air Spring Kit with Compressor for GM 2500/3500 HD
Brand: Rough Country
SKU: 100345WC
Price: 999.95 USD
Availability: InStock

$999.95MAP price

Free shipping · 30-day returns

In stock: 49 available

Shipping weight: 49 lb.

Kit contents: rear air spring kit, 1.5-inch spacer kit, and wireless controller with onboard compressor
Silverado and Sierra 2500 HD/3500 HD, 2020–2025, in 4WD and RWD
Excludes rear sway bar and frame-side-mounted 5th wheel hitch applications
Minor drilling required; downloadable installation guide available

📄 Download the installation guide (PDF)

The Trail Fortress check

Will it fit your truck?

✓ Fits

2020–2025 GMC Sierra 2500 HD · 4WD/RWD

AT4AT4XBaseDenaliDenali UltimateProSLESLT

2020–2025 Chevrolet Silverado 2500 HD · 4WD/RWD

CustomHigh CountryLTLTZWTZR2

2020–2025 GMC Sierra 3500 HD · 4WD/RWD

AT4BaseDenaliDenali UltimateProSLESLT

2020–2025 Chevrolet Silverado 3500 HD · 4WD/RWD

High CountryLTLTZWT

Does NOT increase towing capacity. Minor drilling required. Fitment on this page is based on the manufacturer’s application data.

About this kit

1.5-Inch Spacer Air Spring Kit with Compressor, fitment-checked

Three assemblies in one part number: the GM heavy-duty rear air spring kit, a 1.5-inch spacer set, and the wireless air bag controller with onboard compressor. Rough Country 100345WC fits Silverado 2500 HD and 3500 HD and Sierra 2500 HD and 3500 HD from 2020 through 2026. Not for trucks with a rear sway bar or a frame-side-mounted 5th wheel hitch.

This is the fully equipped version of the GM heavy-duty air spring setup: bags and powder-coated brackets, 1.5-inch spacers, and onboard air with a wireless remote so pressure changes take seconds rather than a walk to the compressor. Applications span 2020 to 2026 in Silverado 2500 HD and 3500 HD and Sierra 2500 HD and 3500 HD, 4WD and RWD. Confirm the truck has no rear sway bar and no frame-side-mounted 5th wheel hitch. Minor drilling is required, and a downloadable installation guide is available.

What’s in the box

Kit contents

1× Air Spring Kit 10034$349.95
1× Air Spring Spacer Kit 10022$49.95
1× Wireless Air Bag Controller Kit w/Compressor 10106$749.95

Priced components are sold separately here, so a worn shock or arm can be replaced on its own later.

Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 100345WC kit fits the vehicles shown in the fitment section above.

Specifications