

SKU: SKU: KLEHK2-1
TIME TO RETIRE THE WIMPY FACTORY HORN
The Model HK2-1 is engineered specifically for drivers who demand maximum sonic impact and a discrete, "blacked-out" aesthetic without sacrificing valuable mounting space. This system provides the ultimate value by packing the raw, commanding authority of an emergency vehicle horn into a compact, streamlined package. Whether you are navigating busy city streets or rural highways, the HK2-1 with stainless steel trumpets ensures you have the presence of a much larger vehicle, making it the perfect upgrade for those looking to replace a weak factory chirp with a professional-grade, high-impact blast.
PROFESSIONAL-GRADE PERFORMANCE
At the heart of the system is the high-performance 6270 waterproof air compressor paired with dual trumpets featuring our signature Stealth Black finish. This heavy-duty combination is not only built to withstand the harshest elements but also provides a sleek, muted look that disappears behind your grille. The 120 PSI air system is optimized for rapid recovery and includes a 0.5-gallon inner-coated steel tank, ensuring you always have a reliable air supply ready whenever you need to make your presence known.
BIG SOUND – SMALL FOOTPRINT
Installation is made simple thanks to the kit’s clever, low-profile, stealth black design. The compact footprint 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 HK2-1, you are joining thousands of drivers who trust Kleinn for superior quality and loud, dependable results. Don’t settle for a vulnerable factory horn when you can have the professional-grade power and "get out of the way" authority of the Universal ProBlaster™ Stealth HK2-1.
THE VERDICT:The Model HK2-1 Stealth Kit is the ultimate compact value package for trucks, SUVs, and Jeeps looking to clear the road with an immediate, deep high-pressure double blast while keeping a hidden, fully blacked-out under-hood aesthetic.
The Screamer
Engineered for "Emergency Vehicle" authority. This series delivers a sharp, high-frequency blast designed to cut through ambient noise instantly. With 3.5" bells, these horns produce a piercing scream that commands attention in heavy traffic.
The Deep Rumble
Don’t just make noise—make an impact. Engineered with massive 6-7" bells, our Train Horns move huge volumes of air to create a deep, earth-shaking rumble. This is the authentic tone of a classic 40,000-lb locomotive.
Professional-grade engineering. Legendary Kleinn Performance.
Too Loud? Too Bad!
AIR HORN SPECIFICATIONS
| Dual Black Air Horns | |
|---|---|
| Part Number | Model 102-1 |
| Number of Horns | 2 Horns (Single Mount) |
| Warranty | 1-Year Warranty |
| Construction | XCR2.0 Black Coated Stainless Steel |
| Vortex 4 Chrome 12v Solenoid | P/N- 307 w/ ¼” Airline Input |
| Min / Max Pressure | 120 - 150 PSI |
| Output (dB) @ 150 PSI | 149.1 dB |
| Dimensions | 16.5” L x 7.25” W x 3.75” H |
| Minimum Tank Size | 0.5-Gallon |
| Airline Input Size | 1/4" OD Airline |
AIR COMPRESSOR SPECIFICATIONS
| 12-Volt Light-Duty Compressor | |
|---|---|
| Part Number | Model 6270RC |
| Warranty | 1-Year |
| Max Pressure | 120 PSI |
| Duty Cycle | 25% @ 100 PSI (@ 72° F) |
| Flow Rate | @ 0 PSI (13.8 Volts): 1.56 CFM |
| Compressor Type | Waterproof Sealed, Oil-less |
| Voltage | 12-Volt DC |
| Motor Type | Permanent Magnetic Motor |
| Max Tank Size | 0.5 Gallon |
| Max Amp Draw | 14 Amps |
| Dimensions | 6.4” L x 3.5” W x 4.6” H |
| Mounting Holes | 6.14” L x 2.76” W (5mm Diameter) |
| Mounting Note | Mount in any position except upside down |
| Shipping Weight | 7 lbs |
| Pressure Switch/ Safety Valve HK1-HK2 | P/N 2121 (Pair w/ 52145 for 120 PSI kits) |
| Pressure Switch/ Safety Valve HK3-HK4 | P/N 2131 (Pair w/ 52155 for 130 PSI Kits) |
AIR TANK SPECIFICATIONS
| 0.5-Gallon Air Tank | |
|---|---|
| Part Number | Model 6260RT |
| Warranty | 1-Year |
| Tank Capacity | 0.5-Gallon |
| Construction | All Steel Design (Gloss Black Epoxy Finish) |
| Internal Coating | Internal Cortec Coating for Corrosion Resistance |
| Mounting Legs | 1 Leg w/ 2 Mounting Points |
| Air Tank Ports | 5 - 1/4" NPT Ports |
| Mounting Hardware | Fitting Pack - 2 Bolts, Nuts, Washers |
| Max Pressure | 150 PSI |
| Dimensions | 8’ L x 6’ W x 8’ H |
AIR TANK FILL RATE DETAILS
| Tank Capacity | Tank Pressure Range | Tank Fill Rate |
|---|---|---|
| .5 Gallon | 0 - 150 PSI | 1 Min. 11 Sec. (+/- 5 Sec.) |
| .5 Gallon | 110 - 150 PSI | 26 Sec. (+/- 3 Sec.) |
| 1 Gallon | 0 - 150 PSI | 1 Min. 57 Sec. (+/- 10 Sec.) |
| 1 Gallon | 110 - 150 PSI | 38 Sec. (+/- 5 Sec.) |
INSTALLATION INSTRUCTION LINKS:
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