Model HK8: Universal Chrome Triple Train Horn & Onboard Air System
KL HK8
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Model HK8: Universal Chrome Triple Train Horn & Onboard Air System
Professional Grade Chrome Authority
For the driver who demands a professional-grade locomotive blast with the classic chrome aesthetic, the Titan™ Model HK8 has arrived. Engineered to outperform everything in its category, the high-impact steel construction of the Model 630 Titan™ horns delivers a sharp, aggressive, multi-tone chord. The HK8 cuts through road noise with surgical precision, providing the signature Kleinn locomotive-style blast that defines a true statement of authority.
The Practical Pneumatic Powerhouse
The Model HK8 delivers elite performance without the bulk. Driven by the industry-exclusive Model 6350RC Waterproof Air Compressor, this system is more than just a horn—it’s a professional-grade onboard air command center. Whether you are delivering a deafening blast, inflating 35” tires, managing air bags, or engaging lockers, the HK8 provides high-pressure pneumatic power exactly when you need it.
Versatile Mounting Options
The Model HK8 is a lightweight, versatile system featuring the popular Model 6350RT 3-Gallon Air Tank internally coated for superior corrosion resistance and designed for a high-capacity/small-footprint balance, this tank is perfect for easy frame-rail or under-body mounting. For maximum installation flexibility, the detachable composite ABS horns can remain on the included flat rack mounting plate or be removed and mounted individually to fit tight spaces.
WHY CHOOSE "THE TITAN" HK8?
- The Titan™ (630) Chrome Train Horns: Precision engineered with three Chrome Steel Trumpets, these horns deliver a massive, authentic multi-tone locomotive blast. Built for the long haul, they combine "heavy metal" trumpets with a chrome-plated finish for ultimate durability.
- 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: With a consistent 150 PSI pressure design and a high-flow 2.11 CFM flow rate, this system is engineered for high-impact, authoritative horn performance. The 100% duty-cycle rating ensures the compressor is perfect for high-impact, loud, and authoritative blasts our clients rave about.
- Space-Saving Design: Engineered with an optimized footprint for a seamless fit in almost any vehicle. The versatile flat rack architecture allows you to install the system as a single unit or mount each horn individually, providing maximum flexibility for installation behind the bumper, on a frame rail, and other various custom configurations.
- Advanced Corrosion Resistance: This 3-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 630 "Titan" Triple Train Horns, high-performance 6350RC waterproof compressor, and 6350RT 3-gallon air tank. It comes fully loaded with a sealed pressure switch, horn button, all required fittings, 10ga wiring kit, and high strength hardware for a seamless, professional installation.
THE VERDICT: The Model HK8 "Titan™" is the definitive choice for drivers who demand a professional-grade blast and rock-solid reliability in a package size designed to fit almost any truck or SUV. The Titan 630 horns deliver the authentic roar of locomotive excellence without the "Demon" HK9 or HK9-Slimline price tag.
WHAT'S IN THE BOX?
- (630) The Titan™ triple train horns: High-impact Chrome-Plated Steel trumpets designed for a loud, authentic locomotive blast
- (6350RC) Waterproof air compressor: 100% Duty Cycle — 150 PSI fully sealed unit engineered to thrive in harsh under-truck environments.
- (6350RT) 3-gallon air tank: Features an internal anti-corrosion coating for superior rust resistance and long-term reliability.
- (INF-1) Tire inflator kit: Includes a 24’ heavy-duty air hose, tire inflator with luminescent gauge, and quick-connect coupler in a canvas storage bag. (Relocate and mount the coupler anywhere with P/N 1302, available separately).
- (2151) Pressure switch: Automated air management (110 PSI on / 150 PSI off). Pair with 52175 safety valve.
- (FIT89) Air tank fitting pack: Complete set of necessary fittings for the 3-gallon system.
- Installation essentials: Horn button, Juice-1 thread sealant, 12 ft of 1/4" airline for horns, 12 ft of 3/8" airline for compressor intake, complete wiring, and all necessary hardware.
BOOST YOUR BLAST: 30% MORE OUTPUT
Unleash the full fury of the Titan™ 630 Horns!
Push the 630 Titan™ horns to the edge of sanity with the Ultra BlastMaster™ (Model 6880). This upgrade allows you to unleash the fury of 30% more power by adding two additional Model 307 high-flow solenoids and swapping the standard 1/4" tubing for a massive 1/2" airline.
The result is a nasty twist to a classic: devastating, bone-rattling decibel levels that demand respect across entire city blocks. Experience the 630 Titan in its most aggressive form—because when it comes to the ultimate train horn, "TOO LOUD" happens to be just right.
TOO LOUD? TOO BAD!
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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Triple Chrome Steel Train Horns |
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Part Number |
Model 630 “The Titan" |
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Number of horns |
3 (Flat Rack or Individual Mount) |
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Warranty |
1-Year Warranty |
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Construction |
Chrome Steel Trumpets |
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Heavy Duty Brass Solenoid (12-Volt) |
Vortex 4 Model 307 |
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Max Pressure |
150 PSI |
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Output (dB) @ 150 PSI |
152.9 dB (154.3 dB w/ 6880 Upgrade Kit) |
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Dimensions (On Flat Rack Bar) |
18.” L x 18.5” W x 7.25” H |
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Dimensions (Each Individual Horn) |
14.5” Lg. – 12.75” Med. - 9.5” Sm. |
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Minimum Tank Size Required |
2.5-Gallon |
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Airline Length and Size Included |
12’ of ¼” OD Airline |
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Upgrade kit compatibility |
Use Model 6880 |
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Air Compressor Specifications
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12-Volt Heavy-Duty Air Compressor |
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Part Number |
Model (6350RC) |
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Warranty |
1-Year |
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Compressor Type |
Waterproof Sealed, Oil-less |
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Motor Type |
Permanent Magnetic Motor |
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Waterproof & Submersible |
Sealed Internally (Must install “Snorkel” system) |
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Compressor “Snorkel Kit” |
Remote Air Filter Relocation Kit- 12' 3/8” Airline |
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Voltage |
12-Volt DC |
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Duty Cycle |
100% @ 100 PSI (@ 72° F) |
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Flow Rate |
@ 0 PSI (13.8 Volts): 2.11 CFM |
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Max Pressure |
150PSI |
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Max Amp Draw |
21 Amps |
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Dimensions |
9.25” L x 4” W x 6.50” H |
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Mounting Holes |
7.32” L x 3.31” W (5mm Diameter) |
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Mounting Note |
Mountable in any position except upside down |
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Pressure Switch |
P/N 2151 (Works with 52175 Safety Valve) |
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Air Tank Specifications
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3-Gallon Air Tank |
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Part Number |
Model (6350RT) |
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Warranty |
1-Year |
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Tank Capacity |
3-Gallon |
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Construction |
All Steel Design (Gloss Black Epoxy Finish) |
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Internal Coating |
Cortec Internal Anti-Corrosion Coating |
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Mounting Legs |
2 Legs w/ 4 Mounting Points |
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Air Tank Ports |
6 - 1/4" NPT Ports & 1 - 1/2" NPT Ports |
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Mounting Hardware |
Fitting Pack - 4 Bolts, Nuts, Washers |
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Max Pressure |
200 PSI |
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Dimensions |
21” L x 8” W x 10” H |
Air Tank Fill Rate Details
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Tank Capacity |
Tank Pressure Range |
Tank Fill Rate |
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2.5 Gallon |
0 - 150 PSI |
4 Min. 35 Sec. (+/- 10 Sec.) |
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2.5 Gallon |
110 - 150 PSI |
59 Sec. (+/- 5 Sec.) |
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5.0 Gallon |
0 - 150 PSI |
9 Min. 15 Sec. (+/- 10 Sec.) |
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5.0 Gallon |
110 - 150 PSI |
2 Min. 25 Sec. (+/- 5 Sec.) |
Installation Instruction Links:
Compressor Overview & Instructions
Horn Solenoid Wiring Instructions

$1,049.95