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Black quad-trumpet Extreme Series train horn on a cordless power tool with Milwaukee® M18 battery, plus wireless remote; +40% louder, 12X longer range
  • Black quad-trumpet Extreme Series train horn on a cordless power tool with Milwaukee® M18 battery, plus wireless remote; +40% louder, 12X longer range
  • Four black metal trumpets on a battery-powered train horn unit with keychain remote and wireless signal icon, running on a Milwaukee® M18 battery
  • Four black train horn trumpets mounted to a battery-powered unit with two wireless remotes, highlighting volume control, overheat and battery discharge protection
  • Two included wireless remotes held in hands, a compact keychain fob reaching up to 160ft and a long-range antenna remote up to 2000ft
  • Black quad-trumpet train horn with remotes; works out of the box, 150 dB output, metal trumpets, 1-year warranty
  • Side profile of the black four-trumpet train horn powered by a cordless tool with Milwaukee® M18 battery and keychain remote
  • Feature infographic: 300ft range remote, 3-level volume control, motor overheat protection and battery discharge protection on dark background
  • Black quad-trumpet train horn powered by a Milwaukee® M18 battery, shown alongside many compatible M18 lithium-ion battery packs
  • Black four-trumpet train horn on a battery-powered unit with two remotes, set against play-button awards for over 1.5 million subscribers
  • Black dual-pair train horn on a Milwaukee® M18 battery unit standing on sand in front of a red fire department truck
  • Compact black four-trumpet train horn with red keychain remote resting on sunlit green grass
  • Red four-trumpet train horn on a cordless battery unit with keychain remote lying on artificial green grass
  • Hand gripping a red quad-trumpet battery-powered train horn held up over green grass
Extreme Quad Train Horn for Milwaukee® 18v Battery

Extreme Quad Train Horn for Milwaukee® 18v Battery

$365.00 $430.00
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150 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.

Extreme Quad Train Horn for Milwaukee® 18v Battery — 150 dB Portable Air Horn with Remote

Meet the loudest handheld horn in our lineup. This Extreme Series portable train horn for Milwaukee® 18v battery is handmade from a brand-new Milwaukee® M18 impact driver and fitted with four tuned, powder-coated metal trumpets for an authentic train-grade blast. This cordless drill train horn works with any Milwaukee® M18 battery (OEM or aftermarket), and arrives ready to use—just secure the battery and press.

Highlights

  • 150 dB output with instant response—no delay between press and blast.
  • Works with any Milwaukee® M18 battery, including aftermarket options.
  • Handmade from a brand-new Milwaukee® impact driver for reliability and longevity.
  • Quad metal trumpets (four sizes) for a deeper, fuller tone and maximum projection.
  • Super long-lasting from one charge—engineered for extended sessions.
  • Wireless remote control up to 160 ft; long-range remote up to 2000 ft.
  • Ready to use from the box—just secure the battery and go.
  • Same day ship-out on eligible orders for fast delivery.

Why the Extreme Series

Built on our quad-trumpet platform and tuned for maximum airflow, the Extreme Series is our loudest portable air horn. It's designed for open-air use where you need a commanding, attention-grabbing blast that carries.

What's Included

  • Extreme Series drill train horn (handcrafted from a new Milwaukee® impact driver)
  • Four powder-coated metal trumpets (four sizes)
  • Wireless default remote control with pre-installed batteries + long-range remote
  • Quick start guide and safety instructions

How It Works

  1. Attach a fully charged Milwaukee® M18 battery to the train horn.
  2. Point the trumpets away from people and pets in an open area.
  3. Press the trigger or use the wireless remote for an instant 150 dB blast.
  4. After use, disconnect the battery if you won't use the air horn for more than 5 hours.

Use Cases

  • Sporting events and tailgates—celebrate big moments with authority.
  • Outdoor gatherings, parades, and celebrations where sound needs to travel.
  • Boating, farms, docks, and job sites for powerful open-area signaling.

Sporting Events: Maximize Impact, Stay Safe

The Extreme Series delivers a loud, high-impact sound that cuts through stadium noise. Use the included remote to trigger the portable train horn from a safe distance, reserve blasts for key moments, and keep bursts short to maintain crowd comfort and hearing safety.

Safety & Care

  • Always wear hearing protection. The train horn is extremely loud.
  • Follow local noise regulations and avoid enclosed spaces.
  • Handheld use only; do not mount under the hood due to high temperatures.
  • Remote module draws standby power—disconnect the battery during storage to prevent drain.
  • If a charger flashes red/green, the battery is deeply drained, not defective; contact support for a jump-start tutorial.
  • For long-term storage, fully charge the battery and store it separately in a cool, dry place.
  • Water-resistant, not waterproof—minimize water exposure.

Specifications

  • Sound Output: up to 150 dB, instant response
  • Trumpets: four powder-coated metal trumpets (four sizes)
  • Power: compatible with Milwaukee® M18 battery platform (battery/charger sold separately; packages available)
  • Remote Range: up to 160 ft; long-range remote up to 2000 ft included
  • Build: handmade portable air horn from a brand-new Milwaukee® impact driver
  • Operation: cordless, handheld, no installation required
  • Shipping: same day ship-out on eligible orders

FAQs

  • Does it include a drill? Yes. Each drill train horn is built from a brand-new Milwaukee® impact driver.
  • Is there any delay? No—sound is instant when triggered.
  • Can I mount it in a vehicle? Avoid under-hood mounting due to heat; this portable train horn is designed for handheld use.
  • Is it waterproof? Water-resistant only; avoid heavy water exposure.
  • Is the remote battery replaceable? Yes, the remote uses two CR2016 batteries.

Shipping, Warranty & Support

  • Same day ship-out on eligible orders.
  • Backed by a 1-year warranty on the horn gun.

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