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Assembled in the USA using a genuine Milwaukee® impact driver housing and custom-engineered components with domestic and imported parts. Just insert your battery and it's ready to blast.
⚠ WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more info: P65Warnings.ca.gov

- Compatible with any Milwaukee® M18 battery — no adapters needed
- Handcrafted using a brand new Milwaukee® Impact Driver housing
- 4 metal trumpets, 4 sizes — full-spectrum train horn sound
- Produces up to 140db train sound without delay
- Up to 160ft wireless remote control range
- All-day battery life on a single M18 charge
- Same day ship-out
- Ready to use out of the box — just snap in your battery!
Four Trumpets. One Hand. Pure Train Horn Power.
The Quad Train Horn for Milwaukee® 18v Battery takes everything you love about a portable train horn and cranks it up. Four metal trumpets — each a different size — create a rich, layered blast that sounds like the real thing. This isn't a toy air horn. It's a handcrafted, battery-powered drill train horn that delivers stadium-shaking volume from something you can carry in one hand.
Built using a Milwaukee® Impact Driver body as the housing, every unit is assembled by hand with precision. The result is a rugged, ergonomic handheld train horn that's ready to use the moment you snap in your M18 battery.
What Makes the Quad Stand Out
- Quad trumpet array: Four metal trumpets in four sizes produce a full, harmonized train horn chord — deeper and richer than dual-trumpet models.
- Power tool housing: Each horn is handcrafted using a Milwaukee® Impact Driver body. Not a generic shell — you get the ergonomic grip and durability of a real power tool.
- 140db output: This battery-powered air horn rivals permanent truck horn installations — without any installation at all.
- Wireless remote control: Trigger your horn from up to 160ft away. Perfect for events, pranks, or hands-free operation.
- Zero setup required: No wiring. No air tanks. No tools needed. Snap in any Milwaukee® M18 battery and you're ready. The ultimate grab-and-go train horn kit.
- M18 battery compatibility: Runs on any Milwaukee® M18 battery you already own — hours of use on a single charge (battery sold separately).
Built for Every Scenario
Whether you call it a drill train horn, a portable air horn, or a battery-powered train horn — the Quad delivers where it counts:
- Tailgating & sporting events — rally your section with a blast that fills the stadium
- Off-road & overlanding — signal across trails, campsites, and open terrain
- Boats & marine use — a loud, reliable horn with no permanent mount needed
- Emergency signaling — 140db cuts through any ambient noise
- Pranks & fun — let's be honest, that's why most people are here
What's in the Box
- 1x Quad Train Horn for Milwaukee® 18v Battery (fully assembled)
- 1x Wireless remote control (160ft range)
- Battery NOT included — compatible with any Milwaukee® M18 battery (sold separately)
Milwaukee® and M18™ are registered trademarks of Milwaukee Tool. BossHorn is an independent company and is not affiliated with, endorsed by, or sponsored by Milwaukee Tool.
Four trumpets. Zero compromises. The Quad Train Horn for Milwaukee® 18v Battery is the sweet spot between portability and raw power — a handcrafted portable train horn that sounds as serious as it looks.

Fully Assembled. Ready to Blast.
Arrives pre-built as a complete tool — just snap in your battery and hit the remote.
Unbox & Snap In Your Battery
Arrives fully assembled — a complete tool, not a kit. Just insert a matching battery and you're good to go.
Trigger or Remote — Your Call
Pull the trigger on the tool itself, or blast from a distance with the included wireless remote (up to 300ft). Long-range 2,000ft remote also available.
Instant Blast
No delay, no warm-up — real train horn sound the moment you press. Three loudness levels for any task: Dual, Quad, and Extreme.
Real train sound. In one hand.
"Your neighbors' car alarm just became the second loudest thing on the block"
Seen in the Wild
Patent Pending Technology
Volume Control
3 adjustable levels
Overheat Protection
Auto shut-off at 185°F
Battery Protection
Prevents deep discharge
Works With Any M18™ Battery
Your BossHorn runs on standard Milwaukee® M18™ batteries — the same ones powering millions of M18™ tools worldwide. No proprietary battery, no lock-in. Pick any capacity from 2.0Ah to 12.0Ah. The higher the Ah, the more blasts per charge. Already own M18™ tools? You're ready to go. New to the platform? M18™ batteries start at $30 and work across 200+ tools.
See the Difference
Same price range. Completely different league.
| Feature | Boss Series | Others |
|---|---|---|
| Price | $365 | $355 |
| Sound Output | 150 dB | 130 dB |
| Perceived Volume | 4x louder | 1x |
| Trumpets | 4 (tuned) | 2 |
| Remote Range | 300 ft (2,000 ft avail.) | 160 ft |
| Remotes Included | 1 | 0 (extra cost) |
| Volume Control | ✓ 3 Levels | ✗ |
| Overheat Protection | ✓ | ✗ |
| Battery Protection | ✓ | ✗ |
| Built in USA | ✓ | Unknown |
| Warranty | 1 Year | ✗ |
| Return Policy | 90 Days | 30 Days |
Technical Specifications
Sound
Remote Control
Power System
Construction
Where to Use It
Sporting Events
Electrify the stadium. When your team scores, the entire parking lot will know.
Tailgating
The ultimate party starter. Remote-trigger from your lawn chair. Be the legend.
Trucks & Off-Road
Mount it or hand-hold. Louder than any factory or aftermarket horn on the road.
Boats & Marine
Fog signal, dock arrival, or just pure fun on the water. Audible for a mile.
Camping & Hiking
Bear and wildlife deterrent. Recommended by outdoor experts for backcountry safety.
Emergency Signaling
Audible up to 1 mile. Alert rescue teams when every second counts.
Construction Sites
Shift change signal, safety alerts, or just getting everyone's attention. Fast.
Content Creation
Prank videos, reaction content. This is your viral moment on TikTok & YouTube.
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