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DIY quad train horn kit with four black trumpets and wireless remote, powered by a Milwaukee® M18 battery, on a white background
  • DIY quad train horn kit with four black trumpets and wireless remote, powered by a Milwaukee® M18 battery, on a white background
  • DIY train horn kit components laid out — black trumpets, air compressor unit, wireless remote, mounting bolts, and air hose on a white background
  • DIY train horn kit with four black trumpets, compressor canister, wireless remote, mounting bolts, and air hose arranged on a white background
  • Feature graphic showing the train horn's 300 ft wireless remote, three-level volume control, motor overheat protection, and battery discharge protection
DIY Quad Train Horn for Milwaukee® 18v Battery

DIY Quad Train Horn for Milwaukee® 18v Battery

$160.00
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Listen to the Quad blast
140 dB · real recording from a genuine unit
Disclaimer
BossHorn by Horngun Corp., not affiliated with Milwaukee Electric Tool Corporation, states that this product is independently manufactured by Horngun Corp. and incorporates a genuine Milwaukee® M18™ tool platform component lawfully purchased through authorized dealers. Milwaukee® and M18™ are registered trademarks of Milwaukee Electric Tool Corporation, used solely to identify the incorporated component. Milwaukee Electric Tool Corporation does not manufacture, authorize, or approve the BossHorn product. BossHorn / Horngun Corp. is wholly independent of Milwaukee Electric Tool Corporation.

DIY Quad Train Horn Kit for Milwaukee® 18v Battery — Up to 140 dB

Build your own cordless train horn with this DIY drill train horn kit for Milwaukee® 18v battery. Designed to fit Milwaukee® impact drill shells, this kit includes everything you need to create a portable train horn that produces up to 140 dB of authentic train sound. Perfect for those who love hands-on projects and want a fully customized air horn build.

What's Included

  • Air horns assembly (4 trumpets, with premium upgrade available)
  • High-performance air compressor
  • Harness with remote signal receiver (ready to install)
  • Wireless remote control
  • Air hose
  • 2 screws for mounting
  • Trigger button for manual operation

Highlights

  • DIY Kit — build your own portable train horn using your Milwaukee® drill shell.
  • Produces up to 140 dB — extremely loud, train-grade sound.
  • Wireless remote included — operate from up to 160 ft away.
  • Cordless & battery-powered — no cords, no outlets, fully portable air horn.
  • Premium trumpets upgrade available for even more impact.

How It Works

Transform your Milwaukee® drill into a powerful drill train horn by replacing internal parts with the included compressor and harness. This kit is engineered to fit most Milwaukee® impact drill shells. Some modifications may be needed depending on the model (grinding may be required).

DIY Build Steps

  1. Unscrew and remove the clamp shell.
  2. Remove gears, motor, and factory harness.
  3. Fit the shell to match the air compressor.
  4. Install the new harness and connect compressor terminals.
  5. Attach your Milwaukee® 18v battery and confirm the compressor powers on.
  6. Screw back the shell securely.
  7. Drill 2 holes for bolts on the back side of the shell.
  8. Mount horns using included bolts.
  9. Connect the air hose to compressor and horns.
  10. Enjoy your custom-built portable train horn!

Perfect For

  • DIY enthusiasts who want a custom-built drill train horn.
  • Sporting events, camping, parades, and outdoor fun.
  • Users who already own a Milwaukee® drill and want to repurpose it into a powerful air horn.

Safety & Notes

  • Wear hearing protection — the train horn is extremely loud.
  • Use in open areas; avoid enclosed spaces.
  • Compatible with Milwaukee® M18 batteries (sold separately).

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