Model HK9-Slimline: Universal ProBlaster™ Demon™ 730 Stainless Steel Triple Train Horns & Onboard Air System

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KL HK9-Slimline

Regular price $1,149.95
Sale price $1,149.95 Regular price
In stock

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 HK9-Slimline: Universal ProBlaster™ Demon™ 730 Stainless Steel Triple Train Horns & Onboard Air System

Why The "Demon" is the Undisputed King of the Road! 

When the situation demands more than just loud horn, the Demon 730 stainless steel horns dominate the road! Delivering a sonic roar that cuts through sirens, heavy machinery, and chaotic traffic these precision tuned steel horns are the ultimate train horn solution.  Featuring XCR 2.0™ coated horns, the Demon 730 thrives in the elements providing unmatched durability. come mounted a flat rack, but each can be removed from the rack and mounted separately for maximum installation flexibility.

Massive Pneumatic Power!

Designed for those who refuse to compromise, the HK9-Slimline is the ultimate upgrade for your rig.  Powered by our industry-exclusive (6450RC) waterproof compressor, this high-performance system is more than our loudest horn; it is an integrated onboard air command center.  Whether you are delivering a deafening blast, inflating 37" tires, managing air-bags, or engaging lockers, the HK9-Slimline provides professional-grade pneumatic power anytime you need it.

Versatile Mounting Options - Smaller Footprint

The HK9-Slimline features all the components of the standard HK9 kit but uses a smaller, 3-gallon (6351RT) slim air tank. This slim design is ideal for frame rail mounting and offers the versatility needed for small to mid-size trucks and SUVs where space is limited. The horns come mounted on a flat rack and can be removed to mount individually for maximum installation flexibility. If you require more air capacity, search the HK9 kit, includes larger 5-gallon (6450RT) air tank.

THE VERDICT: If you want to be heard before you're seen, the Demon™ 730 is your weapon of choice. It stands as the largest and loudest train horn in our arsenal, designed specifically for those who want to dominate the road with a professional-grade locomotive blast paired with rock-solid reliability in a package sized to fit most trucks or SUVs.

WANT THEM EVEN LOUDER?

Unleash the full fury of your Demon™ 730 Horns!

Experience the Demon 730 Horns in all their glory!  The Ultra BlastMaster™ (6890) re-engineers the horns to deliver a massive 30% decibel increase through optimum airflow for extreme output.  It’s a simple law of physics: more air equals more power. We ditched the standard 3/8” lines at the horns in favor of a high-flow, dedicated 1/2” airline and premium VX6003 brass solenoids mounted to each individual horn. The result is a shocking twist on a classic; delivering devastating, soul-shaking decibel levels that command attention across city blocks. Overwhelm the senses and dominate the streets with the absolute peak of train horn intensity right at your fingertip. Because when it comes to the ultimate locomotive blast, “TOO LOUD” is just right.

TOO LOUD? TOO BAD!

 

HK9-Slimline Kit Includes:

  • (730) The Demon™ Stainless Steel Triple Train Horns 
  • (VX6003) High Performance Air Solenoid Valve (In the box with the horns)
  • (6450RC) 200 PSI, 100% Duty, High Output, Waterproof Air Compressor
  • (6351RT) 3-gallon Slim Design, Inner Cortec Coated Steel Air Tank 
  • (FIT9-Slimline) P/N 2151 Pressure switch & heavy duty air tank fittings
  • (INF-1) Tire inflator with analog glow in the dark gauge, 24' heavy duty air hose, and quick connect fitting for inflation. (P/N-1302 quick connect relocation kit is available for purchase, relocation of the air outlet makes it easier to access the quick connect coupler for onboard air).
  • Installation Essentials: Horn Button, Juice-1 thread sealant, 12 ft of 1/2" airline for horns, 12 ft of 3/8" airline for compressor intake, wiring, and hardware.

 Train Horn Specifications

Model 730 "Demon" Triple Train Horns

 

Warranty

2-Year Warranty

Construction

Stainless Steel Trumpets, Zinc Alloy Base

Heavy Duty Brass Solenoid (12-Volt)

P/N- VX6003 (51238 & 53814N Fittings Incl.)

Max Pressure

200 PSI

Output (dB) @ 150 PSI

157.8 dB

Dimensions (Mounted on Flat Rack Bar)

22.5” L x 18.5” W x 7.25” H

Dimensions (Of each Individual Horn)

21.75” Lg. - 17.75” Med. - 13.5” Sm.

Minimum Tank Size

2.5 Gallon

 

Air Compressor Specifications

Model 6450RC Ultra Heavy-Duty Air Compressor

 

Warranty

2-Year Extended (6450RC, 6650RC, & 730)

Compressor Type

Waterproof Sealed, Oil-less

Motor Type

Permanent Magnetic Motor

Waterproof & Submersible

Sealed Internally (Must install “Snorkel” system)

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): 2.5 CFM

Max Pressure

200PSI

Max Amp Draw

23 Amps

Dimensions

11.25” L x 4” W x 6.50” H

Mounting Holes

8.90” 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)

Tank Fill Rate 0-150 PSI 

(2.5 Gal) 3 Min. 55 Sec. (+/- 10 Sec.)

Tank Fill Rate 110-150 PSI 

(2.5 Gal) 44 Sec. (+/- 5 Sec.)

 

Air Tank Specifications

Model 6351RT Slim Mount Air Tank

 

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

5 - 1/4" NPT Ports & 1 - 3/8" NPT Ports

Mounting Hardware

Fitting Pack - 4 Bolts, Nuts, Washers

Max Pressure

200 PSI

Dimensions

27” L x 6” W x 8” H

Minimum Tank Size

2.5 Gallon

 

Installation Instruction Links:

Air Compressor Overview

Air Compressor Wiring Diagram

Solenoid Instructions

Air Horn System Overview 

Air System Components

Model 6890 Blastmaster Upgrade Kit

730 Horn Disassembly Instructions

 


Model HK9-Slimline: Universal ProBlaster™ Demon™ 730 Stainless Steel Triple Train Horns & Onboard Air System

$1,149.95

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.