DIY Train Horn Gun Kit with 4 Trumpets for DeWalt - up to 140db
The loudest portable train horn ever made. 150 dB. Handcrafted in the USA from a brand new Portable Train Horns impact driver.
$160.00
Built in
The USA
150 dB Train Sound
1-Year Warranty
Pre-built Standalone Tool
No Installation · No Drill Needed
Color: Black
Trumpets · LOW PITCH
4×
Aluminum Alloy
2×14" + 2×12"
Customize Your Kit
INCLUDED
Remote Control (300ft) i
1 included free · extra remotes +$35 each
1
FREE
Long-Range Remote (2,000ft) i
Pro-grade range for events & large venues
1
+$59
6Ah Battery i
20V MAX compatible · 500+ blasts per charge
1
+$30
Battery Charger i
20V MAX compatible fast charger
1
+$30
Free Shipping, ships today
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Free 90-day returns ⓘ
DIY Train Horn Gun Kit with 4 Trumpets for DeWalt – Up to 140 dB
Build your own 140 dB cordless train horn with this complete DIY kit for DeWalt drills. Featuring quad trumpets, a built-in compressor, and a remote control system, this kit gives you everything needed to turn your impact drill into a powerful, attention-grabbing horn. Perfect for events, safety alerts, outdoor adventures, or just having fun.
Key Features
- Compatible with DeWalt Drills – Works with most DeWalt impact drill models, plus many other brushless drills.
- 140 dB Loudness – Creates an incredibly powerful blast, louder than most vehicle horns.
- Quad Trumpets – Delivers a bold, authentic train horn sound.
- Wireless Remote Control – Operate your horn from a distance with ease.
- Extreme Trumpets Upgrade – Optional upgrade available for even more sound power.
What’s Included in the Kit
- Air horns assembly (4 trumpets)
- Air compressor
- Pre-built harness with remote receiver
- Remote control
- Air pipe
- 2 mounting screws
How to Build Your DeWalt Train Horn
- Open the drill shell and remove gears, motor, and harness.
- Fit the shell to match the air compressor.
- Install the new harness and connect the compressor to terminals.
- Attach your DeWalt battery and test the compressor.
- Reassemble the shell and drill two mounting holes.
- Install the horn mount with bolts and connect the air hose.
- Enjoy your powerful new train horn!
Why Choose This DIY Kit?
Unlike cheap alternatives, this kit is engineered for power, durability, and compatibility. It comes with everything you need to build a high-performance cordless horn from your DeWalt impact drill—no extra tools or complicated wiring required. Just follow the steps and enjoy instant results.
Order your DIY DeWalt Train Horn Kit today and create a 140 dB blast that everyone will hear.
Free U.S. ShippingAll orders ship free. Overnight available at checkout.
Same-Day DispatchOrders before 12:00 PM PST ship the same day with full tracking.
90-Day Money BackNo questions asked. Full refund + free return shipping.
InternationalShipping costs calculated at checkout. Duties may apply.
1-Year Full WarrantyComplete coverage on every Horn Gun we sell. No fine print.
15-Minute RepairsShip it or bring it in. Our technicians fix it on the spot.
Hassle-Free ProcessNo runaround. Contact us, ship it, get it back fixed.
Warranty covers the Horn Gun unit only. Batteries and chargers are not included.
No Maintenance RequiredBuilt tough. No servicing needed under normal use.
Avoid OverheatingGive short breaks during extended continuous use.
Remove Battery When StoredPrevents accidental activation and preserves charge.
Store in Cool, Dry PlaceSplash-resistant but not waterproof. Keep away from prolonged moisture.
DIY Train Horn Gun Kit with 4 Trumpets for DeWalt - up to 140db
$160.00
$160.00
150DB
Max Volume
1 mile
Audible Range
160ft
Remote Range
4.9★
Customer Rating
Loudest Model
Best Value
2026 New Release
Up to
150dB
Real train sound. In one hand.
60 dB
Normal Conversation
100 dB
Car Horn
120 dB
Rock Concert
150 dB
BossHorn
"Your neighbors' car alarm just became the second loudest thing on the block"
// Exclusively at BossHorn
Patent Pending Technology
Volume Control
3 adjustable levels
Low110 dB
Med130 dB
Full150 dB
Overheat Protection
Auto shut-off at 185°F
SafeWarmCut-off
Battery Protection
Prevents deep discharge
These features are patent pending and exclusive to the 2026 Boss Series. No competitor offers this technology at any price.
// Don't Take Our Word For It
See It. Hear It. Want It.
// Your Batteries. Your Horn.
Works With Any M18 Battery
Already own Milwaukee M18 tools? Your batteries work. Don't have any? Third-party M18 batteries start at $30. No proprietary nonsense.
2.0Ah
Compact
4.0Ah
Standard
5.0Ah
Extended
6.0Ah
500+ blasts
8.0Ah
High Output
12.0Ah
All Day Power
All M18 batteries
Aftermarket M18-compatible
LED low battery indicator
Auto-cutoff at 15% — protects battery
Boss Series vs. Everyone Else
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 |
// Full Technical Data
Technical Specifications
Sound
Max Output140DB
Volume LevelsSingle level
Sound TypeFreight Train Horn Deep Low Tone
Trumpets4× Aluminum Alloy, Powder Coated
Sound DelayZero — Instant
Audible RangeUp to 1 mile
Remote Control
Standard Range160ft
Long-Range (optional)2,000 ft
Remotes Included1 (160ft range)
Remote Battery23A 12V (included)
Frequency433 MHz Encrypted
Power System
Battery TypeMilwaukee M18
CompatibleAll M18: 2.0–12.0Ah
AftermarketYes — any aftermarket for Milwaukee
Blasts (6Ah)500+ short / 200 sustained
Battery IndicatorLED on body
Deep DischargeActive protection
Construction
Base UnitBrand-New Milwaukee M18 Impact Driver Body Shell
HousingImpact-Resistant Polymer
Thermal ProtectionSmart Motor Overheating Protection
Water ResistanceSplash-Resistant
Weight4lb (w/o battery)
Dimensions14" x 6" x 12"
One Horn. Endless Possibilities.
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.
// Everything You Need to Know
Got Questions?
We've got answers.
Can't find what you're looking for? Chat with us
The horn does NOT include a battery — it's available as an add-on right on this page. Just check the "2Ah Battery" option in the add-ons section above the Add to Cart button. We sell affordable aftermarket M18-compatible batteries that work perfectly with your Milwaukee horn. Already own Milwaukee M18 tools? Your existing batteries will work too.
Up to 140 dB with Single level. Uses 4× Aluminum Alloy, Powder Coated for an authentic freight train sound. Audible up to 1 mile. Hearing protection recommended at close range.
Yes — use the soft volume level indoors. Full power is for outdoor use only. Always wear hearing protection.
With a 2Ah M18 battery: 500+ short blasts or ~200 sustained 2-second blasts. Easily lasts an entire game day, tailgate, or event. Higher Ah = more blasts. Smart Motor Overheating Protection.
Any Milwaukee M18 battery from 2.0Ah to 12.0Ah — including aftermarket M18-compatible batteries. Already own Milwaukee power tools? Your existing batteries will work.
Every Quad Series includes 1 (160ft range) wireless remote (433 MHz Encrypted, battery included). Want more range? Add the Long-Range Remote (up to 2,000ft) from the add-ons. You can use multiple remotes at the same time.
Milwaukee Quad Series horn gun body (4lb), 4× Aluminum Alloy, Powder Coated, 1× wireless remote (160ft). Dimensions: 14" x 6" x 12". Battery and charger sold separately — add from the add-ons or use any M18 battery you own.
Splash-Resistant — don't submerge it. Store indoors when not in use. The Milwaukee body shell is impact-resistant polymer, built tough for outdoor use.
Legal to own and use on private property in all 50 states. Road/vehicle use varies by state — check your local laws. Popular for tailgating, boating, off-road, farms, and sporting events.
Every BossHorn comes with a 1-year warranty. If something goes wrong, contact our support team and we'll work with you to resolve the issue. Plus a 90-day money-back guarantee if you're not satisfied.
Boss Series (2026): 150 dB, 1× 300ft remote, 3 volume levels, patent-pending tech. Extreme Series: 150 dB, 2× 200ft remotes, 3 volume levels. Quad Series: 140 dB, 1× 160ft remote, 4 trumpets, great value. Dual Series: 130 dB, 1× 160ft remote, 2 trumpets, compact entry-level option.
Orders placed before 2 PM PST ship the same day. Free standard shipping (1–5 business days). Need it faster? Overnight shipping is available at checkout.
