Warranty
The components in this kit are backed by a 2-year manufacturer's defect warranty.

Presentamos el kit de bocina de tren Flatlaw de 3 litros: donde el impacto sónico incomparable se combina con la innovación para ahorrar espacio. Con el potente y profundo rugido de la clásica Outlaw, este diseño renovado se adapta fácilmente a espacios reducidos sin comprometer su sonido característico. Cuando el espacio es limitado pero las expectativas son altas, la Flatlaw de 3 litros es la opción indiscutible.
(Nota: Los compresores de aire montados en el tanque no están completamente sellados. Por este motivo, el fabricante recomienda montar el sistema de tanque/compresor en posición vertical, en un espacio cerrado y protegido de la humedad, la suciedad, los residuos, etc. No montar este producto según las indicaciones anulará la garantía)
Separar el compresor del tanque anulará la garantía de este kit. Si necesitas una solución con el compresor separado, consulta nuestros modelos 232 y superiores.
Nuestra nueva y compacta bocina de tren, la Flatlaw, ahora está disponible en un kit sellado contra la intemperie que no te costará una fortuna. ¡Nunca antes habías podido obtener una relación calidad-precio tan increíble y además un sistema de aire sellado contra la intemperie! ¡Este kit está listo para dejarte boquiabierto!
Separar el compresor del tanque anulará la garantía de este kit. Si necesitas una solución con el compresor separado, consulta nuestros modelos 232 y superiores.
Three trumpets nest over one mount at just 8 inches tall. It tucks into low-clearance spots a full-size train horn setup could never fit.
A 120 PSI compressor and tank come in the box, and the system refills from 90 PSI in about 35 seconds between honks.
Air line, wiring, relay or full wiring kit, fittings, mounting hardware, instructions, and a set of earplugs. One box, one weekend.
One recording, no editing: the Flatlaw at its 120 PSI operating pressure.
Phone speakers undersell it. Earplugs ship in the box for a reason.
Same Flatlaw horn either way. The air system decides how long you can honk, where the unit can live, and what else it can do.

The M3 packs a 3-liter tank and compressor into one unit about 16.5 by 4.9 by 7.1 inches. It is not weather sealed, so mount it upright in a dry, enclosed spot: behind a seat, in a trunk, in a toolbox. The smallest, simplest way to run a Flatlaw.

The 127H is weather sealed, so it can live outside the cab: frame rail, truck bed, under the body. Its 1.5-gallon tank holds a longer honk, and the same air supply can top off tires or run small air tools.
Stealth Black hides in the shadows under your truck. Chrome wants to be seen. Same trumpets, same sound.


Each kit ships complete and ready to install. The only difference is the air system.
| Horn | Flatlaw train horn |
|---|---|
| Dimensions | 17.5″ L × 16.25″ W × 8″ H |
| Weight | 12.5 lb (5.67 kg) |
| Voltage | 12-volt DC |
| Unit | M3 3-liter compressor & tank combo |
|---|---|
| Operating pressure | 120 PSI |
| Restart pressure | 90 PSI |
| Unit size | 16.5″ × 4.9″ × 7.1″ |
| Drain port | 1/8″ NPT |
| 0 to 120 PSI | 2 min (±10 sec) |
|---|---|
| 90 to 120 PSI | 35 sec (±5 sec) |
| Horn | Flatlaw train horn |
|---|---|
| Dimensions | 17.5″ L × 16.25″ W × 8″ H |
| Weight | 12.5 lb (5.67 kg) |
| Voltage | 12-volt DC |
| Unit | 127H weather-resistant air system |
|---|---|
| Air tank | 1.5-gallon (6.6 L), 4-port |
| Compressor | 2L, 18 A max, 25% duty @ 100 PSI |
| Operating pressure | 120 PSI |
| Restart pressure | 90 PSI |
| Unit size | 15.2″ × 5.9″ × 12.8″, 13.75 lb |
| 0 to 120 PSI | 2 min 10 sec (±10 sec) |
|---|---|
| 90 to 120 PSI | 35 sec (±5 sec) |
On both kits, detaching the compressor from the tank voids the warranty. Need a split compressor and tank layout? Look at our 232 and higher models.
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The components in this kit are backed by a 2-year manufacturer's defect warranty.
We offer a 30-day satisfaction replacement or refund guarantee on all purchases, except where otherwise noted in the product listing.
Merchandise may be returned within 30 days from the shipment arrival date for a refund. A Returned Merchandise Authorization (RMA) number is required for all returns, and a 15% restocking fee may apply. Please report any order discrepancy within 7 days of the invoice date.
Physical damage to any product voids warranty coverage. This includes improper handling and any damage sustained by irregular usage.
The M3 combines the compressor and tank into a single unit that is not weather sealed, so it must be mounted upright in a dry, enclosed spot: behind a seat, in a trunk, or in a toolbox, away from moisture, dirt, and debris. Mounting it any other way, or separating the compressor from the tank, voids the warranty.
This product can expose you to chemicals including lead, which is 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.
These air horns are extremely loud. Wear hearing protection when testing at close range, never honk directly next to a person or inside an enclosed space, know your local regulations, and use the horns responsibly.
The Flatlaw Train Horn Kit ships complete, installs with hand tools, and is backed by a 2-year warranty and a 30-day money-back guarantee.