Model HK4-1: Universal ProBlaster™ Black Compact Quad Air Horn System
STOP BEING IGNORED. START BEING HEARD.
The Model HK4-1 is engineered specifically for drivers who demand maximum sonic impact and a discrete, "blacked-out" aesthetic. This system takes our best-selling platform to the next level by utilizing a quad-trumpet configuration to produce an even louder, richer, and more complex tone than standard setups. With four tuned trumpets, the HK4-1 ensures you have the undeniable presence of a much larger vehicle, making it the ultimate professional-grade upgrade to replace a weak factory chirp with a head-spinning blast.
PROFESSIONAL-GRADE PERFORMANCE
At the heart of the system is a high-efficiency 130 PSI air compressor paired with a 1-gallon air tank. This rugged, oil-less system is designed for durability and "set it and forget it" reliability. Featuring integrated thermal protection and a complete wiring and installation kit, the HK4-1 offers a dependable solution for drivers who require consistent, high-pressure performance on demand. Whether you are navigating dense traffic or open highways, this system provides the air capacity needed to power through any situation.
BIG SOUND – SMALL FOOTPRINT
Installation is simple thanks to the kit’s clever, low-profile design. Despite featuring four stealth black trumpets, the compact footprint of the metal horns allows for a seamless fit in tight locations—such as behind the grille or tucked neatly inside the engine bay—where traditional train horns simply won't fit. By choosing the HK4-1, you are joining thousands of drivers who trust Kleinn Automotive Accessories for superior quality and "get out of the way" authority. Don’t settle for a vulnerable factory horn when you can have the quad-trumpet power of the Universal ProBlaster™ Stealth HK4-1.
