Shopping Cart

Your cart is empty.

Your cart is empty.

HornBlasters Flatlaw 3-Liter Train Horn Kit, All-In-One Air System - Easy Install - Big Sound

5.0 (8) Write Review
Free shipping on orders over $29.99

$299.99

$ 99 .00 $99.00

In Stock

About this item

  • 110 PSI Air Source - The 3-liter air source included in this kit operates at 110 PSI. The Flatlaw sounds great at 110 PSI!
  • Compact Design: The reengineered configuration allows the horns to lay flat, providing more installation options without sacrificing sound quality. It's the perfect solution for those who desire the big sound of the Outlaw horn but have limited space available.
  • Efficient Air Source: The included M3 3-Liter air source unit provides an ample air supply to power the train horns. With its compact size, it can fit into tight spaces while still delivering enough air for 3-4 seconds of honk time.
  • Complete Kit: The Flatlaw kit comes with everything you need to get started right away. It includes a 3-liter air source unit, pre-installed high-flow valve on the horns, and all necessary components for a hassle-free installation.
  • Easy Installation: The kit comes with straightforward installation instructions, making it easy for both professionals and DIY enthusiasts to set up. With a couple of hours, you'll have the Flatlaw train horn kit up and running on your vehicle.


Product Description

Experience the impressive power of the HornBlasters Flatlaw 3-Liter Train Horn Kit, the latest addition to our renowned train horn lineup. Designed specifically for those seeking the mighty Outlaw sound in a compact package, this kit offers unparalleled performance and versatility.

Flatlaw Key Features

Fltlaw

Flat Design for Easy Install

Other train horns on the market are designed to take up a lot of space underneath your vehicle. The Flatlaw is designed to save room without hanging down too low underneath your truck.

All of the necessary hardware you need to mount the horn to your vehicle is included.

Flatlaw hi-res

True Train Horn Sound

The flatlaw stands out with three over-sized chimes.

Each chime produces a different pitch and when all 3 sound off at once, it creates the train horn sound we all know and love.

valve

Pre-Installed Solenoid Valve

This horn features a pre-installed solenoid valve, ready to accept the 1/4" line we supply with the horn.

3-Liter Air Source Kit

This compact air system is perfect for your car/SUV/truck. This unit is only 16.5" long and 5" wide. This can be installed in your toolbox, truck bed (if covered), trunk, or in a storage compartment.

*This air source is not weather resistant, do not mount outside or upside down!

Compact All In One Air Source

Pre-installed Pressure Switch and Gauge

Complete All-in-One Wiring Kit

Durability you can trust

Flatlaw Specifications

Inlet Port Thread 1/4" BSPT
Inlet Tube Size 1/4" OD
Maximum Pressure 150 PSI
Minimum Pressure 50-60 PSI
Diaphragm Type Stainless Steel
Voltage 12 & 24v Compatible
Dimensions Horn Length: 17.5" (444.5 mm) Horn Width: 16.25" (412.75 mm) Horn Height: 8" (203.2 mm)

3-Liter Air Source Specifications

Voltage 12v Only
Outlet Port 1/4" OD Tube
Pressure Switch On/Off Range 80 PSI ON, 110 PSI OFF
Weather Resistant? No! Must be mounted UPRIGHT, in an ENCLOSED area!
Max Amp Draw @ 12VDC 18 Amps

marnie ream
Reviewed in the United States on February 3, 2025
Sounds like the real thing!! Deep, rich sound! Very loud!
Evan Hodge
Reviewed in the United States on February 17, 2025
The horn was reasonably priced, and it came with everything I needed to set it up, I was able to install the horn in only 2 hours with the help of online manuals, very loud, it fit perfectly to my Chevy colorodo, the quality is perfect for what I needed, it functions perfectly I’ve had it and had no problems at all, the durability is amazing, great materialsc does not feel cheap, I would reccomend it to many others!!!
Andy
Reviewed in the United States on January 30, 2025
Best train horn
JC
Reviewed in the United States on September 9, 2024
extremely robust and good quality, definitely the real deal.
Customer
Reviewed in the United States on December 3, 2024
Great for the price super loud
hugo a wills
Reviewed in the United States on October 6, 2024
Not as loud as a train or a $1000 horn but for the price the level is good enough.
Osgrammy
Reviewed in the United States on April 7, 2024
Drives his own and loves it when kids -big and little- do the fist pumps for him to blast the horn.
Todd
Reviewed in the United States on June 6, 2023
Thought this would sound better then it does ya know more like sound clip train horn not a semi ....very short blast before sound falls off one gal definitely not big enough for a 3sec blast