Model HK2: Universal ProBlaster Chrome Dual Air Horn System
KL HK2
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Model HK2: Universal ProBlaster Chrome Dual Air Horn System
Time to Retire the Wimpy Factory Horn
The Model HK2 is engineered specifically for drivers who demand maximum sonic impact and a premium chrome 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 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 Chrome finish. This heavy-duty combination is not only built to withstand the harshest elements but also provides a sleek installation that can be fitted to any application. 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. It’s a rugged, oil-less design that prioritizes durability and consistent performance in any environment.
Big Sound – Small Footprint
Installation is made simple thanks to the kit’s clever, low-profile 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, 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™ HK2..
WHY CHOOSE MODEL HK2?
- 2-Tone Authority: Unlike the shorter 101 horns, these longer trumpets create a deeper tone that delivers a startling, high-pressure 2-tone blast designed to pierce through the loudest traffic and heavy machinery from construction.
- Industry-Leading Submersible Waterproof Compressor: Drive with total confidence through river crossings or monsoons by drawing air from inside the vehicle. This fully waterproof unit delivers an impressive 1.56 CFM flow rate for rapid recovery.
- 25% Duty Cycle Reliable Performance: The 120 PSI system ensures you always have the air you need to make your presence known featuring its oil-less, maintenance-free design with thermal protection.
- Compact Integration: The low-profile design allows for a seamless fit behind the grille or tucked inside the engine bay.
- Advanced Corrosion Resistance: The 0.5-gallon air tank is treated with an internal anti-corrosion coating, preventing internal rust and ensuring a clean, moisture-free air supply for your accessories.
- Trusted Quality: Don’t settle for a weak factory chirp—get the professional-grade power that thousands of drivers trust.
WHAT'S IN THE BOX?
- 102: Dual Chrome-Plated Metal Compact Air Horns
- 6270RC: 120 PSI Waterproof Air Compressor (25% Duty Cycle)
- Snorkel Kit: Remote mount intake filter for clean air delivery (Draw air from inside the vehicle)
- 6260RT: 0.5-Gallon steel air tank with internal anti-corrosion coating
- FIT12: Fitting Pack (Sealed pressure switch, safety valve, and drain valve)
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Installation Kit: Comprehensive wiring, airline, and all necessary hardware
Air Horns vs. Train Horns
Find Your Signature Blast
Compact Air Horn Series
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.
- Compact Horns: 102 / 130 / 141
- Kits: HK2 / HK3 / HK4
- Compact Horns: 101 / 102-1 / 130-1 / 141-1
- Kits: HK1 / HK2-1 / HK3-1 / HK4-1 / HKUTV / Vehicle Specific Kits 102-1
Train Horn Series
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 40,000-lb locomotive.
- Train Horns: 500 / 501 / 502 / 630
- Kits: HK6 / HK8
- Train Horns: 220 / 230 / 730
- Kits: HK5 / HK7 / HK9 / HK9-Slimline / All Vehicle Specific Train Horn Kits
Professional-grade engineering. Legendary Kleinn Performance.
Too Loud? Too Bad.
Air Horn Specifications
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Dual Chrome Air Horns |
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Part Number |
Model 102 |
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Number of Horns |
2 Horns (Single Mount) |
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Warranty |
1-Year Warranty |
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Construction |
Chrome-Plated Zinc Alloy |
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Vortex 4 Chrome 12v Solenoid |
P/N- 307 w/ ¼” Airline Input |
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Min / Max Pressure |
120 - 150 PSI |
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Output (dB) @ 150 PSI |
149.1 dB |
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Dimensions |
16.5” L x 7.25” W x 3.75” H |
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Minimum Tank Size |
0.5-Gallon |
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Airline Length and Size Included |
12’ of 1/4" OD Airline |
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Air Compressor Specifications
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12-Volt Light-Duty Compressor |
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Part Number |
Model 6270RC |
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Warranty |
1-Year |
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Max Pressure |
120 PSI |
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Duty Cycle |
25% @ 100 PSI (@ 72° F) |
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Flow Rate |
@ 0 PSI (13.8 Volts): 1.56 CFM |
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Compressor Type |
Waterproof Sealed, Oil-less |
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Voltage |
12-Volt DC |
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Motor Type |
Permanent Magnetic Motor |
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Max Tank Size |
0.5 Gallon |
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Max Amp Draw |
14 Amps |
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Dimensions |
6.4” L x 3.5” W x 4.6” H |
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Mounting Holes |
6.14” L x 2.76” W (5mm Diameter) |
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Mounting Note |
Mount in any position except upside down |
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Shipping Weight |
7 lbs |
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Pressure Switch/ Safety Valve HK1-HK2 |
P/N 2121 (Pair w/ 52145 for 120 PSI kits) |
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Pressure Switch/ Safety Valve HK3-HK4 |
P/N 2131 (Pair w/ 52155 for 130 PSI Kits) |
Air Tank Specifications
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0.5-Gallon Air Tank |
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| Part Number | Model 6260RT |
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Warranty |
1-Year |
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Tank Capacity |
0.5-Gallon |
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Construction |
All Steel Design (Gloss Black Epoxy Finish) |
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Internal Coating |
Internal Cortec Coating for Corrosion Resistance |
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Mounting Legs |
1 Leg w/ 2 Mounting Points |
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Air Tank Ports |
5 - 1/4" NPT Ports |
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Mounting Hardware |
Fitting Pack - 2 Bolts, Nuts, Washers |
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Max Pressure |
150 PSI |
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Dimensions |
8” L x 6” W x 8” H |
Air Tank Fill Rate Details
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Tank Capacity |
Tank Pressure Range |
Tank Fill Rate |
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.5 Gallon |
0 - 150 PSI |
1 Min. 11 Sec. (+/- 5 Sec.) |
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.5 Gallon |
110 - 150 PSI |
26 Sec. (+/- 3 Sec.) |
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1 Gallon |
0 - 150 PSI |
1 Min. 57 Sec. (+/- 10 Sec.) |
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1 Gallon |
110 - 150 PSI |
38 Sec. (+/- 5 Sec.) |
Installation Instruction Links:
Compressor Overview & Instructions

$359.95