Upgrade your truck with the Kleinn spare tire location train horn and onboard air system, engineered specifically for owners of lifted trucks running oversized tires who no longer utilize their factory spare tire mount. This premium heavy-duty kit delivers the signature Kleinn train horn blast paired with professional-grade utility, and everything needed arrives in one box for a simple, professional-looking setup. The entire high-performance package mounts securely beneath the truck bed using a custom-designed bracket that is fully supported by the original equipment manufacturer factory spare tire winch. This innovative setup ensures an easy, bolt-on installation that fits most full-size trucks without requiring cutting, welding, or drilling. This high-performance package features the legendary, earth-shaking blast of our Beast model 230 triple train horns. Providing the pneumatic power is an industry-exclusive, heavy-duty 100 percent duty cycle waterproof air compressor paired with a three-gallon air tank, creating a versatile onboard air station capable of inflating large tires, powering air tools, or operating air suspension bags. For added utility, the package includes a remote-mounted quick connect, a high-pressure air hose for tire inflation, and a dedicated storage bag. For enthusiasts looking to maximize their performance, the entire setup can be upgraded to deliver an even louder blast by adding the part number 6885 BlastMaster Plus valve upgrade kit. Built to endure the toughest environments, this complete system provides the ideal balance of clever, hidden original equipment manufacturer style mounting and high-output performance that serious custom truck builds count on.