Kleinn GMHD20-734 Onboard Air System & Model 730 Demon Horns for 2020-2026 Chevy/GMC 2500/3500 HD

Fits select 2020-2026 Chevrolet Silverado 2500 HD / 3500 HD and GMC Sierra 2500 HD / 3500 HD.

The Kleinn GMHD20-734 is a vehicle-specific, 100% bolt-on onboard air system and train horn kit engineered specifically for heavy-duty GM trucks. This direct-fit setup utilizes precision-cut, powder-coated mounting brackets to bolt directly to factory locations, requiring no drilling or fabrication for a clean, professional installation. The kit features the Model 730 Demon triple train horn, utilizing XCR 2.0 black-coated spun steel trumpets (18.25", 14.75", and 10") for a powerful, locomotive-rivaling blast.

This comprehensive air system is powered by the Model 6450RC 100% duty-cycle waterproof compressor and a 3-gallon Model 6353RT air tank. The compressor and tank mount securely to the mid-frame rails, while the horns are positioned in the bedside step cavities and between the fuel tank and exhaust for a stealthy fit. This kit also provides a versatile air source for tire inflation and air tool use, including a digital tire inflator and a remote quick-connect coupling.

• Model 730 Demon Horns: Triple trumpets (18.25", 14.75", 10") with XCR 2.0 black coating for maximum resonance and durability.
• Model 6450RC Compressor: Waterproof, 100% duty-cycle unit rated at 200 PSI max output.
• Model 6353RT Air Tank: 3-gallon capacity with nine 1/4" NPT ports and anti-corrosion internal coating.
• Complete Installation Kit: Includes custom mounting brackets, 1/2" air line, heavy-duty brass solenoids, tire inflator with digital gauge, and all required wiring.
• Mounting Locations: Horns mount in bedside steps and near fuel tank; tank and compressor mount to mid-frame rails.
• MPN: GMHD20-734