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

Présentation du kit de klaxon Flatlaw 3 litres : où impact sonore inégalé rime avec innovation gain de place. Évoquant le rugissement riche et tonitruant du classique Outlaw, ce design repensé s'adapte aisément aux espaces restreints sans compromettre le son signature. Quand l'espace est limité mais les attentes élevées, le Flatlaw 3 litres s'impose comme le choix incontesté.
(Note : Les compresseurs d'air montés sur réservoir ne sont pas complètement étanches. Pour cette raison, le fabricant recommande que le système réservoir/compresseur soit monté en position verticale dans un espace fermé, à l'abri de l'humidité, de la saleté, des débris, etc. Le non-respect de cette consigne annulera la garantie)
Détacher le compresseur du réservoir annulera votre garantie sur ce kit. Si vous avez besoin d'une solution avec le compresseur détaché, veuillez consulter nos modèles 232 et supérieurs.
Notre nouveau mini klaxon de train, le Flatlaw, est maintenant disponible dans un kit étanche qui ne vous ruinera pas ! Vous n'avez jamais eu un tel rapport qualité-prix auparavant et un système d'air étanche en prime ! Ce kit est prêt à vous épater !
Détacher le compresseur du réservoir annulera votre garantie sur ce kit. Si vous avez besoin d'une solution avec le compresseur détaché, veuillez consulter nos modèles 232 et supérieurs.
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.
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.