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

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.