Model HK1: Universal ProBlaster™ Complete Mini Black Dual Air Horn Kit
KL HK1
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Model HK1: Universal ProBlaster™ Mini Black Dual Air Horn Kit
Time to Retire the Wimpy Factory Horn
The Model HK1 is engineered specifically for drivers who demand maximum sonic impact and a discrete, "blacked-out" aesthetic, even in the most cramped mounting locations. This system provides the ultimate value by packing the raw, commanding authority of a professional air horn into our most compact, streamlined package yet. While other systems struggle to find space, the HK1's shorter trumpet design 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 high-impact blast that fits where others can't.
Professional-Grade Performance
At the heart of the system is the 6270RC waterproof sealed air compressor paired with dual trumpets featuring our signature XCR2.0 black zinc alloy finish. This heavy-duty combination is built to withstand the harshest elements while providing 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. It’s a rugged, oil-less design that prioritizes durability and consistent performance in any environment.
Maximum Sound – Minimum Footprint
The HK1 takes "compact" to the next level. Featuring horns that are even shorter than our HK2-1 model, this kit is the champion of tight installations and produces a high-screaming blast. Its ultra-low-profile design allows for a seamless fit in extremely restricted spaces, such as compact engine bays or narrow gaps behind the grille, where traditional air horns simply won't fit. By choosing the Model HK1, you are getting the same professional-grade "get out of the way" authority as our larger kits, but in a size that guarantees a fit for virtually any vehicle.
WHY CHOOSE MODEL HK1?
- 2-Tone Authority: The 101 air horns produce a high-pitch, startling, high-pressure 2-tone blast designed to pierce through the loudest traffic and heavy machinery.
- Industry-Leading Submersible Waterproof Compressor: Drive with total confidence through river crossings or monsoons by drawing air from inside the vehicle using the snorkel kit.
- 25% Duty Cycle Reliable Performance: The 120 PSI system ensures you always have the air you need, featuring its oil-less, maintenance-free design with thermal protection.
- Compact Integration: The low-profile, stealth XCR2.0 Coated Black 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.
- Trusted Quality: Don’t settle for a weak factory chirp—get the professional-grade power and reliability that thousands of Kleinn clients trust.
WHAT’S IN THE BOX?
- 101: Dual XCR2.0 Coated Black Steel 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)
- 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, 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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Mini Dual Black Air Horns |
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Part Number |
Model 101 |
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Number of Horns |
2 Horns (Single Mount) |
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Warranty |
1-Year Warranty |
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Construction |
XCR 2.0 Black Coated Stainless Steel |
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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 |
146.2 dB |
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Dimensions |
11.5” L x 6” W x 3.75” H |
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Minimum Tank Size |
0.5-Gallon |
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Airline Input Size |
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:

$299.95