Model HK6: Universal "Sentinel" Tri-Mount Chrome ABS Train Horns Kit

KL HK6

$557.95
$557.95 $619.95

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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 HK6: Universal "Sentinel" Tri-Mount Chrome ABS Train Horn Kit

The Legendary Kleinn Locomotive Blast—Reimagined for Smaller Rigs

Don’t let the compact footprint fool you; the Model HK6 Sentinel delivers a massive, earth-shaking impact that lives up to the Kleinn legacy. This system produces a deep, authentic locomotive blast by utilizing three tuned, chrome-plated high-impact ABS trumpets with a single, right-angle, tri-mount design. These horns provide a rich, multi-tonal chord for a blast that's a great introduction to the super-loud club.

Unrestricted Airflow for Maximum Volume

To ensure every decibel is accounted for, the system is engineered for high-volume output. By providing a dedicated, high-pressure air path to the Vortex 4 solenoid, the HK6 Sentinel allows for unrestricted airflow and a startlingly loud, 150+ dB blast that rivals much larger, more expensive systems. When these horns sound, there is no mistaking that genuine train horn authority.

The Compact Powerhouse

The HK6 Sentinel 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 high-performance 150 PSI waterproof compressor with a larger-capacity 1.5-gallon air tank. The result? A consistent, high-pressure air supply that fuels the deep, locomotive-style rumble only a true triple-train horn can produce. Now you can command the road with the authentic Kleinn blast and brilliant chrome aesthetics without the need for a massive, space-hungry footprint.

WHY CHOOSE THE HK6 "Sentinel" TRAIN HORN KIT?

  • The Sentinel Locomotive Blast: Engineered to dominate, the HK6 utilizes three tuned, high-impact ABS trumpets to produce a massive 151.8+ dB multi-tonal chord. This is the authentic, earth-shaking rumble of a real locomotive, reimagined for vehicles where space is a premium.
  • Heavy-Duty Tri-Mount Architecture: Featuring a single-block, right-angle mounting bracket, the Sentinel system is designed for maximum durability. The lightweight yet rugged construction ensures a secure, vibration-resistant install that survives the toughest road conditions.
  • High-Volume 1.5-Gallon Reservoir: Unlike smaller kits, the Sentinel includes an upgraded 1.5-gallon air tank. This increased capacity provides the "lung power" needed for longer, deeper blasts and ensures you have enough air for accessories or small pneumatic tools.
  • Stealthy & Seamless Installation: The compact footprint of the Model 500 horns allows them to be tucked into tight spots like behind the grille or along the frame rail, making it the ultimate solution for Jeeps, SUVs, and mid-sized trucks.
  • Zero Compromise Performance: You get the legendary Kleinn quality—including a fully waterproof compressor and internal anti-corrosion tank coating—at a price point that proves you don't have to sacrifice power for value.

WHAT'S IN THE BOX?

  • (Model 500) Sentinel Tri-Mount ABS Train Horns: Triple high-impact ABS plastic trumpets on a single manifold for a classic locomotive chord.
  • (6275RC) Waterproof Air Compressor: 50% Duty Cycle – 150 PSI fully sealed unit built to survive mud, water, and debris.
  • (6275RT) 1.5-Gallon Air Tank: All-steel design with an internal anti-corrosion coating for maximum rust resistance.
  • (2151) Pressure Switch: Automated management (100 PSI On / 150 PSI Off). *Pair with Model 52175 safety valve for protection.*
  • (FIT56) Fitting Pack: Includes brass drain valve, safety blow-off valve, and high-pressure outlet air fitting.
  • Installation Essentials: Horn button, thread sealant, 12 ft of 1/4" airline, 12 ft of 3/8" airline for snorkel intake, full wiring harness, and all heavy-duty hardware.

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 in heavy traffic.

Classic Chrome
  • Compact Horns: 102 / 130 / 141
  • Kits: HK2 / HK3 / HK4
Stealth Black
  • Compact Horns: 101 / 102-1 / 130-1 / 141-1
  • Kits: HK1 / HK2-1 / HK3-1 / HK4-1 / 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.

Too Loud? Too Bad!

Train Horn Specifications

Tri-Mount ABS Train Horns

 

Part Number

Model 500 Sentinel 

Number of Horns

3 Horns (Single Block Tri-Mount)

Warranty

1-Year Warranty

Construction

Chrome ABS Trumpets

Activation 12v Solenoid (Chrome)

P/N- 307

Min / Max Pressure

140 - 160 PSI

Output (dB) @ 150 PSI

151.8 dB

Dimensions Overall

15.5” L x 11.5” W x 11.5” H

Dimensions (Each Individual Horn)

15.5” Lg. - 13.5" Med. - 11.25" Sm.

Minimum Tank Size Required

1.5-Gallon

Airline Length and Size Included

12’ of ¼” OD Airline

 

Compressor Specifications

12v Med Duty Air Compressor

Part Number

Model 6275RC

Warranty

1-Year

Max Pressure

150 PSI

Duty Cycle

50% @ 100 PSI (@ 72° F)

Max Tank Size

1.5 Gallon

Compressor Type

Waterproof Sealed, Oil-less

Voltage

12-Volt DC

Motor Type

Permanent Magnetic Motor

Max Amp Draw

20 Amps

Dimensions

8.25” L x 4” W x 6.50” H

Mounting Holes

6.14” L x 3.31” W (5mm Diameter)

Mounting Note

Mount in any position except upside down

Shipping Weight

9 lbs

Pressure Switch

P/N 2151 (Works with 52175 Safety Valve)

 

Air Tank Specifications

1.5-Gallon Air Tank

 

Part Number

Model 6275RT

Warranty

1-Year

Tank Capacity

1.5-Gallon

Construction

All Steel Design (Gloss Black Epoxy Finish)

Internal Coating

Internal Cortec Coating for Corrosion Resistance

Mounting Legs

2 Legs w/ 4 Mounting Points

Air Tank Ports

5 - 1/4" NPT Ports

Mounting Hardware

Fitting Pack - 4 Bolts, Nuts, Washers

Max Pressure

150 PSI

Dimensions

15” L x 6” W x 8” H

 

Air Tank Fill Rate Details 

Tank Capacity

Pressure Range

 Fill Rate

1 Gallon

0 - 150 PSI

1 Min. 30 Sec. (+/- 10 Sec.)

1 Gallon

110 - 150 PSI

22 Sec. (+/- 5 Sec.)

1.5 Gallon

0 - 150 PSI

3 Min. 27 Sec. (+/- 10 Sec.)

1.5 Gallon

110 - 150 PSI

1 Min. 01 Sec. (+/- 5 Sec.)

 

Installation Instruction Links:

Compressor Instructions
Air Compressor Wiring Diagram
Air Horn Kit Instructions
Air Horn System Overview
Air System Components

Model HK6: Universal "Sentinel" Tri-Mount Chrome ABS Train Horns Kit

$557.95

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.

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