Model HK5: Universal ProBlaster "Mini Beast" Dual ABS Train Horn System
KL HK5
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Model HK5: Dual "Mini Beast" Train Horn System
The Legendary Kleinn Locomotive Blast—Reimagined for Smaller Rigs
Don’t let the compact footprint or the price tag fool you; the Model HK5 "Mini Beast" truly lives up to its name. This system delivers a deep, locomotive, Kleinn-style blast by pairing dual composite ABS wide-bell horns with high-performance zinc alloy drivers. These horns provide the train horn blast with super versatile mounting capabilities, each horn mounts individually for a fit in virtually any application.
Unrestricted Airflow for Maximum Volume
To ensure every decibel is accounted for, each horn is equipped with its own Vortex™ 4 (307) solenoid. By providing a dedicated air path of 1/4" airline to each horn, this setup allows for unrestricted airflow and a startlingly loud output that hangs with much larger systems.
The Compact Powerhouse
The HK5 is the ultimate solution for vehicles where mounting space is at a premium—such as smaller trucks, SUVs, or Jeeps—but a commanding "get out of the way" presence is non-negotiable. This system bridges the gap between size and strength by pairing our industry exclusive waterproof compressor with a larger capacity 1.5-Gallon tank. The Result? A consistent 150 PSI of pressurized air that fuels the deep, locomotive style rumble only a true train horn can produce. Now you can command the road with the authentic Kleinn blast without the need for a massive, space hungry, footprint and with the durability that our clients expect.
Big sound, small price, zero compromises.
WHY CHOOSE MODEL HK5?
- The Mini Beast™ (220) Dual Train Horns: High-impact ABS plastic trumpets and Heavy-duty Zinc Alloy Driver, these horns are designed for a loud, authentic locomotive sound with maximum durability and a lightweight design.
- 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 provided with the compressor.
- Maximum Output: Consistent 150 PSI pressure and 1.76 CFM flow rate make this kit perfect for high-impact, loud, and authoritative horn performance (50% duty-cycle).
- Space-Saving Design: Optimized footprint designed for easy mounting in almost any vehicle application.
- Advanced Corrosion Resistance: This 1.5-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.
- Complete All-in-One Solution: This comprehensive kit includes Model 220 "Mini-Beast" Train Horns, the high-performance 6275RC waterproof compressor, and 6275RT 1.5-gallon air tank. It comes fully loaded with a sealed pressure switch, all required fittings, 10ga wiring kit, and high strength hardware for a seamless, professional installation.
WHAT'S IN THE BOX?
- (Model 220) "Mini Beast" Train Horns: Dual high-impact ABS plastic individual mount horns for versatile mounting with the Kleinn style locomotive blast
- (6275RC) Waterproof Air Compressor: 50% Duty Cycle — 150 PSI fully sealed unit engineered to thrive in harsh under-truck environments.
- (6275RT) 1.5-Gallon Air Tank: Features an internal anti-corrosion coating for superior rust resistance and long-term reliability.
- (2151) Pressure Switch: Automated air management (100 PSI on / 150 PSI off). Use with 52175 safety-valve.
- (FIT56) Fitting Pack: Includes drain valve, safety blow-off valve, and outlet air fitting.
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Installation Essentials: Horn button, thread sealant, 12 ft of 1/4" air tubing for horns, 12 ft of 3/8" airline for compressor intake relocation, complete wiring, and all necessary hardware.
Air Horns vs. Train Horns:
Find Your Signature Blast
Compact Air Horn Series
Engineered for "Emergency Vehicle" authority. Our compact series delivers a sharp, high-frequency blast designed to cut through the thickest noise instantly. Featuring high-pressure 1/4" airline and 3.5" wide bells, these horns produce a piercing scream that commands attention in heavy traffic or loud construction zones.
- Air Horns: Models 102, 130, & 141
- Universal Air Horn Kits: ProBlaster Models HK2, HK3, & HK4
- Air Horns: Models 101, 102-1, 130-1, 141-1
- Universal Air Horn Kits: ProBlaster Models HK1, HK2-1, HK3-1, HK4-1, & HKUTV
Train Horn SERIES
Don’t just make noise—make an impact. Engineered with massive 6-7" end bells and heavy-duty drivers, our Train Horns move a staggering volume of compressed air to create a deep, earth-shaking rumble you can feel in your chest and hear down the block. This is the authentic tone of a 40,000-lb locomotive and the ultimate "clear the way" authority that every Truck and SUV deserves.
Classic Chrome
- Train Horns: Models 500, 501, 502, & 630
- Train Horn Kits: ProBlaster Models HK6 & HK8
- Train Horns: Models 220, 230, & 730
- Train Horn Kits: ProBlaster Models HK5, HK7, HK9, & HK9-Slim
Professional-grade engineering. Legendary Kleinn Performance.
Too Loud? Too Bad
Train Horn Specifications
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Dual ABS Train Horns |
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Part Number |
Model (220) “Mini Beast” |
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Number of Horns |
2 Horns (Individual Mount) |
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Warranty |
1-Year Warranty |
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Construction |
Composite ABS Trumpets, Zinc Alloy Base |
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Activation 12v Solenoid (Chrome) |
P/N- 307 |
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Min / Max Pressure |
140 - 150 PSI |
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Output (dB) @ 150 PSI |
151.8 dB |
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Dimensions (Small Individual Horn) |
11.5” L x 5” W x 5” H |
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Dimensions (Large Individual Horn) |
16.25” L x 6.25” W x 6.25” H |
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Minimum Tank Size Required |
1.5-Gallon |
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Airline Length and Size Included |
12’ of ¼” OD Airline |
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Compressor Specifications
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12v Med Duty Air Compressor |
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Part Number |
Model 6275RC |
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Warranty |
1-Year |
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Max Pressure |
150 PSI |
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Duty Cycle |
50% @ 100 PSI (@ 72° F) |
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Max Tank Size |
1.5 Gallon |
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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 Amp Draw |
20 Amps |
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Dimensions |
8.25” L x 4” W x 6.50” H |
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Mounting Holes |
6.14” L x 3.31” W (5mm Diameter) |
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Mounting Note |
Mount in any position except upside down |
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Shipping Weight |
9 lbs |
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Pressure Switch |
P/N 2151 (Works with 52175 Safety Valve) |
Air Tank Specifications
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1.5-Gallon Air Tank |
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Part Number |
Model 6275RT |
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Warranty |
1-Year |
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Tank Capacity |
1.5-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 |
2 Legs w/ 4 Mounting Points |
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Air Tank Ports |
5 - 1/4" NPT Ports |
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Mounting Hardware |
Fitting Pack - 4 Bolts, Nuts, Washers |
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Max Pressure |
150 PSI |
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Dimensions |
15” L x 6” W x 8” H |
Air Tank Fill Rate Details
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Capacity |
Pressure Range |
Fill Rate |
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1 Gallon |
0 - 150 PSI |
1 Min. 30 Sec. (+/- 10 Sec.) |
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1 Gallon |
110 - 150 PSI |
22 Sec. (+/- 5 Sec.) |
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1.5 Gallon |
0 - 150 PSI |
3 Min. 27 Sec. (+/- 10 Sec.) |
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1.5 Gallon |
110 - 150 PSI |
1 Min. 01 Sec. (+/- 5 Sec.) |
Installation Instruction Links:
Compressor Overview & Instructions
Horn Solenoid Wiring Instructions

$549.95