Greg T. just wrapped up a clean install on his 2024 GMC Sierra AT4 HD, outfitting it with our Stealth Spare Tire Delete Kit paired with the HornBlasters Tire Inflation Kit, and the result is slick, functional, and trail-ready. The Stealth Spare Tire Delete Kit is mounted neatly in the factory spare tire location, keeping everything tucked up and protected while freeing up space and adding serious onboard air capability.
The Stealth Spare Tire Delete Kit replaces the factory spare tire with a complete hidden train horn system, giving Greg's Sierra a clean, aggressive look while keeping everything tucked out of sight. The kit mounts Shocker XL train horns and a 5-gallon 8-port air tank in the spare tire location, pairing them with a stealth black compressor and 150 PSI air system for serious performance.
With 10–12 seconds of honk time and an average 2-minute refill from 110 to 150 PSI, the Stealth Spare Tire Delete Kit delivers serious performance on a heavy-duty platform like the AT4 HD. The addition of the HornBlasters Tire Inflation Kit makes this setup even more practical for off-road trips, towing, or quick air-ups on the go, giving Greg's Sierra practical onboard air for airing up tires in addition to the horn system.
Big shoutout to Greg T. for the solid install and for choosing the Stealth Spare Tire Delete Kit on his AT4 HD. It's a perfect example of how to add capability without sacrificing a clean OEM-style look. His 2024 GMC Sierra AT4 HD now combines hidden train horn power with real-world utility, all built into the space that used to hold the spare, making it slick, functional, and trail-ready.
Feature Highlights
- Stealth Spare Tire Delete Kit replaces the factory spare tire with a complete hidden Shocker XL train horn system
- Includes four-bell Shocker XL train horns, 5-gallon 8-port air tank, stealth black compressor, valve, gauge, and wiring
- Operates at 150 PSI with 110 PSI restart pressure, providing 10–12 seconds of honk time with an average 2-minute refill from 110–150 PSI
- Spare tire location install keeps the system out of sight while freeing up bed and frame space for other gear
- Paired with the HornBlasters Tire Inflation Kit to add practical onboard air for tire inflation, off-road trips, towing, and roadside use
STEALTH TRAIN HORN POWER FOR YOUR AT4 HD
The Stealth Spare Tire Delete Kit gives your 2024 GMC Sierra AT4 HD the same hidden train horn setup that Greg unlocked on his truck. With Shocker XL horns, a 5-gallon air system, and the ability to add a HornBlasters Tire Inflation Kit, this upgrade delivers both sound and utility. Install a Stealth kit on your truck and keep the power tucked away where only you know it's there, adding capability without sacrificing a clean OEM-style look.