Model HK6: Universal "Sentinel" Tri-Mount Chrome ABS Train Horn System | 150 PSI

KL HK6

$526.95
$526.95 $619.95

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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.

THE VERDICT: The Model HK6 "Sentinel" is the definitive entry point for drivers who want elite, multi-trumpet locomotive resonance without rebuilding their vehicle frame around a massive air configuration setup.

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).
  • (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.

Classic Chrome
  • Compact Air Horns: 102 / 130 / 141
  • Universal Air Horn Kits: HK2 / HK3 / HK4
Stealth Black
  • Compact Air Horns: 101 / 102-1 / 130-1 / 141-1
  • Universal Air Horn Kits: HK1 / HK2-1 / HK3-1 / HK4-1
  • Vehicle Specific Air Horn Kits: Models ending in 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
12-Volt Air Solenoid (Chrome) P/N- 307 Votex 4 Horn Activation Solenoid
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 Horn) 15.5” Lg. - 13.5" Med. - 11.25" Sm.
Minimum Tank Size  1.5-Gallon
Airline Length - Size  12’ of ¼” OD Airline

AIR 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:

Model HK6: Universal "Sentinel" Tri-Mount Chrome ABS Train Horn System | 150 PSI

$526.95

Does it come with a warranty?

Kleinn Automotive Accessories Limited Warranty

Kleinn Automotive Accessories stands behind the quality and craftsmanship of our products. Our products are covered against defects in materials and workmanship when properly installed and used under normal operating conditions, subject to the terms below.

One-Year Limited Warranty

Unless otherwise specified, Kleinn Automotive Accessories products are covered by a 1-year limited warranty from the original date of purchase.

This warranty applies to the original purchaser and covers defects in materials and workmanship under normal use.

If a product is determined to have a covered warranty defect, Kleinn Automotive Accessories will, at its discretion, repair or replace the defective product or component.

What Is Not Covered

This warranty does not cover damage or failure resulting from:

  • Improper installation
  • Misuse, abuse, or improper operation
  • Use outside the product's intended application or specifications
  • Modification or alteration of the product
  • Accidents or physical damage
  • Electrical damage
  • Environmental damage or exposure
  • Normal wear and tear

Kleinn Automotive Accessories is not responsible for installation or removal charges, diagnostic fees, labor costs, vehicle downtime, loss of use, or other incidental or consequential expenses associated with warranty service.

Warranty Claims

To request warranty service, email warranty@kleinn.com with the following information:

  • A copy of your original sales receipt or proof of purchase
  • Your full name
  • Email address
  • Telephone number
  • A brief description of the issue

A Kleinn representative will review your claim and may first attempt to resolve the issue through technical support.

If the product needs to be returned for inspection, Kleinn will provide a Return Authorization (RA) number and return instructions. Products should not be returned without prior authorization.

Once received, the product will be inspected to determine whether the issue is covered under warranty. If a covered defect in materials or workmanship is confirmed, Kleinn will, at its discretion, repair or replace the defective product or component.

If inspection determines that the product does not have a covered warranty defect, the product may be returned to the customer, and the customer will be responsible for applicable return shipping costs.

This limited warranty gives you specific legal rights. You may also have other rights, which vary from state to state.

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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