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⚠ This is a DIY build kit — YOU assemble it

You are buying a DIY kit of components, not a ready-to-use train horn. You will need to disassemble an impact drill and put it together yourself — expect 1–2 hours the first time you build one. Battery and charger are sold separately.

DIY Impact Train Horn Kit with 4 Trumpets - up to 150db - BossHorn
DIY Impact Train Horn Kit with 4 Trumpets - up to 150db - BossHorn
DIY Impact Train Horn Kit with 4 Trumpets - up to 150db - BossHorn
DIY Impact Train Horn Kit with 4 Trumpets - up to 150db - BossHorn
DIY Train Horn Gun Kit with 4 Trumpets (Universal) - BossHorn
DIY Kit

DIY Train Horn Gun Kit with 4 Trumpets (Universal)

All components included to build your own cordless train horn from a compatible impact drill. Step-by-step guide below.

$130.00
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Full Build Guide & What's Included

DIY Train Horn Gun Kit with 4 Trumpets (Universal, No Remote)

Build your own cordless train horn with this universal DIY kit, designed for brushed drills. Featuring four powerful trumpets and a built-in compressor, this kit transforms your impact tool into an attention-grabbing horn. No remote or receiver is included, and this kit cannot be used with any remote control system. Perfect for those who want a straightforward, manual setup.

Key Features

  • Universal Compatibility – Works with most brushed impact drills.
  • Quad Trumpets – Delivers a bold, authentic train horn sound.
  • Extremely Loud Output – Easily surpasses standard car and truck horns.
  • No Remote Control – Pure manual operation, simple and direct.
  • Complete DIY Kit – Includes compressor, trumpets, and fittings for easy assembly.

What’s Included

  • Air horns assembly (4 trumpets)
  • Air compressor
  • Air hose
  • 2 mounting screws

How to Build Your Train Horn

  1. Open the drill shell and remove gears and motor.
  2. Fit the shell to match the air compressor.
  3. Connect the compressor directly to the drill’s terminals.
  4. Attach your drill battery and confirm the compressor runs correctly.
  5. Reassemble the shell and drill two mounting holes.
  6. Install the horn mount with bolts and connect the air hose.
  7. Enjoy your powerful new 4-trumpet train horn!

Why Choose This Universal Kit?

Designed for brushed drills, this kit provides everything needed for a powerful handheld train horn without unnecessary electronics. It’s simple, durable, and effective—just the essentials to create a loud, commanding horn for events, outdoor use, or fun.

Order your DIY Universal Train Horn Kit today and experience the unmatched power of a quad-trumpet blast.

What You Also Need to Build It

These DO NOT come in the DIY kit. You'll need a compatible impact drill (to harvest the shell, gears, motor) and a battery + charger. Many customers already have these — if not, pick up what you need below.

Not into DIY?

Get a fully assembled BossHorn — ready out of the box

We build them for you. Same 140dB–150dB output, tested and guaranteed. Just snap in your battery and blast.

Shop Ready-Built HornsLoudest Horns (150dB)