Model HK7: Universal "Beast" Complete ABS Triple Train Horns / Onboard Air Kit

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KL HK7

Regular price $755.95
Sale price $755.95 Regular price $839.95

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PROP 65 WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

Model HK7: Universal ProBlaster Beast ABS Triple Train Horns & Onboard Air Kit

Why the Beast Rules Its Class!

For the driver who demands a professional-grade locomotive blast without the investment of a full-metal HK9 systems, "The Beast™" Model HK7 has arrived. Engineered to outperform everything in its category, the high-impact ABS construction of the Model 230 Beast™ horns delivers a sharp, aggressive harmonic chord. The HK7 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 HK7 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 HK7 provides high-pressure pneumatic power exactly when you need it.

Versatile Mounting Options

The Model HK7 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 Beast” HK7

  • The Beast™ 230 Train Horns: Precision engineered with three ABS Trumpets and Heavy-Duty zinc alloy drivers, these horns deliver a massive, authentic multi-tone locomotive blast. Built for the long haul, they combine huge sound and flexible mounting options, with 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.
  • Multi-Purpose Utility: Not just for horns—use the powerful onboard air system for tire inflation up to 37", managing air suspension / air bags, and small air tools. Includes the INF-1 inflator kit with a 24’ heavy-duty air hose and tire inflator with luminescent gauge.
  • 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 230 "Beast" 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, wiring, and hardware.

THE VERDICT: The Model HK7 "Beast™" 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 Beast delivers the authentic roar of locomotive excellence without the "Demon" HK9 or HK9-Slimline price tag.

 

What's included?

  • (230) The Beast™ triple train horns: High-impact ABS 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 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: 24’ air hose, tire inflator with luminescent gauge, and quick-connect coupler in a canvas storage bag.
  • (2151) Pressure switch: Automated air management (110 PSI on / 150 PSI off).
  • (FIT7) Air tank fitting pack: Complete set of necessary fittings for the 3-gallon system.
  • Installation essentials: Horn button, Juice-1 thread sealant, airlines, complete wiring, and all necessary hardware.

 

BOOST YOUR BLAST: 30% MORE OUTPUT

Unleash the power of the Beast™ 230 Train Horns!

Push the 230 Beast™ horns to the edge of sanity with the Ultra BlastMaster™ (Model 6885). This upgrade allows you to unleash the fury of 30% more power by adding two additional Model VX6003 high-flow solenoids and swapping the standard 1/4" tubing for a massive 1/2" airline.

The result is bone-rattling decibel levels that demand respect across entire city blocks. Experience the 230 Beast 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

The Screamer

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.

Classic Chrome
  • Compact Horns: 102 / 130 / 141
  • Kits: HK2 / HK3 / HK4
Stealth Black
  • Compact Horns: 101 / 102-1 / 130-1
  • HK1 / HK2-1 / HK3-1 / HK4-1 / HKUTV / Vehicle Specific Kits: 102, 102-1
The Deep Rumble

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 classic 40,000-lb locomotive.

Classic Chrome
  • Train Horns: 500 / 501 / 502 / 630
  • Kits: HK6 / HK8
Stealth Black
  • Train Horns: 220 / 230 / 730
  • Kits: HK5 / HK7 / HK9 / HK9-Slimline

Professional-grade engineering. Legendary Kleinn Performance.

 

 

Train Horn Specifications

Triple ABS Train Horns

Part Number

Model (230) “The Beast"

Number of horns

3 (Flat Rack or Individual Mount)

Warranty

1-Year Warranty

Construction

Composite Black ABS Trumpets

Heavy Duty Brass Solenoid (12-Volt)

P/N- VX6003 (51438 & 53814N Fittings Incl.)

Max Pressure

150 PSI

Output (dB) @ 150 PSI

155.1dB (156.9 dB w/ 6885 Upgrade Kit)

Dimensions (On Flat Rack Bar)

18.5” L x 18” W x 7” H

Dimensions (Each Individual Horn)

18.5” Lg. – 16.5” Med. - 14.5” Sm.

Minimum Tank Size Required

2.5-Gallon

Airline Length and Size Included

12’ of ¼” OD Airline

Upgrade kit compatibility

Use Model 6885

 

Air Compressor Specifications

Heavy-Duty Air Compressor

Part Number

Model (6350RC)

Warranty

1-Year 

Compressor Type

Waterproof Sealed, Oil-less

Motor Type

Permanent Magnetic Motor

Waterproof & Submersible

Sealed Internally (Must install “Snorkel” Kit)

Compressor “Snorkel Kit”

Remote Air Filter Relocation Kit- 12' 3/8” Airline

Voltage

12-Volt DC

Duty Cycle

100% @ 100 PSI (@ 72° F)

Flow Rate

@ 0 PSI (13.8 Volts): 2.11 CFM

Max Pressure

150PSI

Max Amp Draw

21 Amps

Dimensions

9.25” L x 4” W x 6.50” H

Mounting Holes

7.32” L x 3.31” W (5mm Diameter)

Mounting Note

Mountable in any position except upside down

Pressure Switch

P/N 2151 (Works with 52175 Safety Valve)

 

Air Tank Specifications

3-Gallon Air Tank

 

Part Number

Model (6350RT)

Warranty

1-Year

Tank Capacity

3-Gallon

Construction

All Steel Design (Gloss Black Epoxy Finish)

Internal Coating

Cortec Internal Anti-Corrosion Coating

Mounting Legs

2 Legs w/ 4 Mounting Points

Air Tank Ports

6 - 1/4" NPT Ports & 1 - 1/2" NPT Ports

Mounting Hardware

Fitting Pack - 4 Bolts, Nuts, Washers

Max Pressure

200 PSI

Dimensions

21” L x 8” W x 10” H

 

Air Tank Fill Rate Details 

Tank Capacity

Tank Pressure Range

Tank Fill Rate

2.5 Gallon

0 - 150 PSI

4 Min. 35 Sec. (+/- 10 Sec.)

2.5 Gallon

110 - 150 PSI

59 Sec. (+/- 5 Sec.)

5.0 Gallon

0 - 150 PSI

9 Min. 15 Sec. (+/- 10 Sec.)

5.0 Gallon

110 - 150 PSI

2 Min. 25 Sec. (+/- 5 Sec.)

 

Installation Instruction Links:

Air Horn Kit Instructions

230 Horn Disassembly Instructions

Air Horn Wiring Diagram

Compressor Instructions 

Air Compressor Wiring Diagram

Air System Components

6885 Blastmaster Upgrade Kit Instructions

 


Model HK7: Universal "Beast" Complete ABS Triple Train Horns / Onboard Air Kit

$755.95

Does it come with a warranty?

One-Year Limited Defect Warranty for Kleinn Automotive Accessories:

Kleinn Automotive Accessories is committed to delivering high-quality products to our customers. We stand behind the craftsmanship and materials of our products by offering a comprehensive one-year limited warranty. This warranty is extended to the original purchaser, ensuring that when our products are installed properly and used under standard conditions, they will be free from defects in workmanship and materials for a period of one year from the original date of purchase.

This warranty encompasses a promise that the product you have purchased will perform as expected under normal use conditions and will not suffer from flaws in materials or craftsmanship. However, it is important to note that this warranty does not cover any damage that results from abusive use, operation that is not in line with the product’s intended purpose, or harm resulting from exposure to harsh environmental conditions. In the event that a product is found to be defective within the warranty period following a thorough inspection, Kleinn Automotive Accessories reserves the right to either repair or replace the defective item at no additional charge to the purchaser. It is our goal to ensure that our products meet the high standards that our customers expect, but we also want to clarify that Kleinn is not responsible for covering any costs related to the installation of our products, nor are we liable for any loss or damage that may occur as a result of the repair or replacement process of any product under warranty.

Extended Two-Year Warranty for Select Products:

Understanding the specific needs of our customers and the demands placed on certain products, Kleinn Automotive Accessories is pleased to offer an exclusive extended two-year warranty for our 6450/6650 Compressors and 730 Horns. This special warranty extension reflects our confidence in these products’ durability and performance. Eligible products under this extended warranty will enjoy all the benefits of our standard one-year warranty with an additional year of protection, totaling two years from the date of purchase. This extended warranty coverage ensures that these specific models, recognized for their robustness and reliability, receive the extra assurance customers desire for these critical components.

Detailed Warranty Return Procedure:

Should you need to initiate a return under the warranty, we have a straightforward process designed to make it as convenient as possible for our valued customers. To start, you will need to email a copy of your sales receipt, which must be dated within the past year for standard warranty claims or within the past two years for claims under the extended warranty for the 6450 Compressors and 730 Horns. This email should be directed to our Warranty Manager and include your full name, email address, telephone number, and a concise description of the problem you are experiencing.

Upon receipt of your email, a dedicated representative from Kleinn Automotive Accessories will reach out to you directly. Our first step will always be to attempt to resolve the issue through technical support, aiming to provide a quick and effective solution. If the problem cannot be addressed remotely, our representative will issue a Return Authorization number. This number is crucial as it will identify your return throughout the inspection process. You are then required to send the product back to Kleinn Automotive Accessories for a comprehensive physical inspection.

Upon inspection, if the product is determined to be defective due to issues in workmanship or materials, Kleinn will undertake to either repair or replace the product at our discretion. We are committed to ensuring that our customers receive products that meet our high-quality standards, and we will make every effort to resolve warranty claims to your satisfaction. However, if the inspection reveals that the product does not have a material defect, we will return the unit to the customer. In such cases, the shipping costs for the return will be the responsibility of the customer.

Kleinn Automotive Accessories
4045 N. Highway Drive, Tucson, AZ 85705
Tel (520) 579-1531

What's the returns policy?

How To Return An Item

Your item must be in its original unused condition to be returned, unless there is a manufacturer defect. You must return the item within 30 days of your purchase.

1. Please email support@kleinn.com to request a refund and we will assign you a Return Authorization #.

2. Mail your returned item to:
Kleinn Automotive Accessories
Returns Department
4045 N Highway Drive
Tucson, AZ 85705

3. Include in your package a signed letter stating the reason for your return and the original receipt.

Return Non-Exceptions

Merchandise that has been worn, used, or altered will not be accepted for return or exchange.

Restocking Fee

All returns are subject to a 15% restocking fee, which will be deducted from your refund. If shipping and handling fees were applied to your order, they are non-refundable.