DIY Train Horn Kit for Ryobi® 18v Battery

• Complete kit to build a 140 dB cordless train horn powered by a Ryobi® 18V battery
• Four tuned trumpets for an authentic train-style tone
• High-output compressor, pre-wired harness, and remote receiver included
• Wireless remote works from up to 160 ft; trigger control once assembled
• Step-by-step guide included — a genuinely satisfying weekend build
• Optional Extreme trumpet upgrade offered at checkout

A Garage Project That Ends With a Bang

Some weekend projects end with a birdhouse. This one ends with a 140 dB train horn. The DIY kit ships every component you need — four-trumpet assembly, compressor, wiring harness, receiver, remote, air hose, and hardware — and the included guide walks you through assembly one step at a time, even if this is your first build — a screwdriver or drill for the two mounting screws is all you'll need from your own bench. When you're done, you own a cordless, battery-powered horn that runs on the same Ryobi® 18V batteries you already keep charged for your tools, plus full bragging rights because you put it together yourself.

The finished air horn is impact-tough enough for tailgates and truck beds. Fire it from the trigger, or stand back as far as 160 ft and hit the wireless remote. Chasing even more resonance? Add the Extreme trumpet upgrade when you check out.

Same-day ship-out on early orders — start the build this weekend.

Where It Shows Off

• Tailgates and game days — rally your whole section with a true train-style blast
• Car shows and parades — an attention-grabber nobody else in the row built by hand
• Backyard events — start races, end rounds, announce dinner across the property
• Boating and off-road trips — high-volume signaling where it counts
• Emergencies — be heard instantly when it matters most

In the Box

• Quad-trumpet horn array
• High-output compressor
• Factory-wired harness with integrated remote receiver
• Wireless remote
• Air hose
• Mounting hardware (two screws)
• Battery sold separately — works with any Ryobi® 18V battery

Ryobi® is a registered trademark of its respective owner. We are an independent seller and are not affiliated with, endorsed by, or sponsored by the trademark owner. All references to Ryobi® are about battery compatibility only. Battery not included.