• TecHorns DIY 4-Horn Kit – handheld train horn assembly with black four-horn array, air compressor, clear tubing, and mounting hardware for custom builds and DIY installation
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DIY 4-Horn Train Horn Kit – Portable Air Horn Builder’s Kit (No TecHorn Casing)

DIY 4-Horn Train Horn Kit – Portable Air Horn Builder’s Kit (No TecHorn Casing)

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🔧 DIY 4-Horn Train Horn Kit – Build a 20V Portable Air Horn (No Cool Custom TecHorn Casing)

If two horns just won’t cut it, step up to four. The DIY 4-Horn Train Horn Kit delivers more sound, more tones, and more flexibility—no casing, no limits. Designed for builders who like getting loud on their own terms, this kit lets you turn a compatible brushed impact driver into a full-volume, battery-powered beast.

Mount them on your SxS, off-road rig, motorcycle, e-bike, car, golf cart, or parade float, this is a DIY upgrade that punches way above its weight.

What’s Included:

  • (4) Metal air horns
  • (1) Compact air compressor
  • Air hose
  • Mounting hardware
  • PDF instructions

Just connect it to a compatible brushed impact drill or vehicle of your choice, wire it up, and you're ready to let it rip.

🛠️ Build Time: Around 1 hour
📦 No Returns – You’re not buying a finished product—you’re building an attitude. If it rattles your soul a bit, it’s working.

⚠️ Compatibility Notice:

Designed for brushed impact drivers with mechanical trigger switches.
Brushless models with electronic triggers may not work or could require advanced modifications.

⚠️ Use at Your Own Risk:

Please have basic knowledge of electronics and wiring before starting. You're converting a power tool into a horn—there's no instruction manual for common sense.

🔊 Top Uses for the DIY 4-Horn Kit

  • Off-Road Builds & Overland Rigs – Perfect blend of power and portability
  • Golf Carts & Electric Toys – Add teeth to your tame ride
  • Farm, Construction & Utility Equipment – Be heard above the heavy machinery
  • Garage Experiments – Not every DIY project has to be practical... this one proves it

🔧 Explore More DIY TecHorn Kits:

  • DIY Dual Horn Kit – Compact and portable with just enough punch
  • DIY 5-Horn Train Horn Kit – The noisiest of the bunch—because subtle isn’t fun

Looking to switch horn setups for different vehicles or events? Our Only Horns Kits let you scale up or down your existing TecHorn.

  • DIY Dual Only Horns Kit – Add-on flexibility for smaller builds
  • DIY 4-Horn Only Horns Kit – Keep your core setup and swap horns as needed
  • DIY 5-Horn Only Horns Kit – For when size matters

📩 Not sure what setup fits? Reach out at ideas@techorns.com and we’ll help.

🔥 Go beyond volume—build something worth bragging about.
🔊 Order your DIY 4-Horn Train Horn Kit today and turn your tools into thunder.

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TecHorn Pink 2-Horn – compact handheld train horn with 20 V lithium battery and black trumpets, displayed on a couch highlighting its playful color and modern design
TecHorn Tropical Blaze 5-Horn – handheld train horn with 20 V lithium battery and vibrant candy-fade finish blending red, orange, and green, shown in hand for a detailed close-up view
Thin BLUE Line TecHorn 4-Horn – handheld train horn with 20 V lithium battery, displayed in front of a custom blue golf cart with a Thin BLUE Line Punisher decal honoring law enforcement pride and unity
Teal TecHorn 4-Horn – handheld train horn with 20 V lithium battery, shown at the beach held by two women enjoying a sunny day near the water, highlighting its bold color and summer vibe
Purple TecHorn 2-Horn – handheld train horn with 20 V lithium battery, sitting on a beach cooler in the sand near the shoreline, showcasing its bold color and portable design for beach days and outdoor fun
Teen celebrating at a flag football game holding a black TecHorn 2-Horn handheld train horn with 20 V lithium battery, capturing the excitement and fun energy of game day
'Merica and Thin RED Line TecHorn 4-Horn handheld train horns with 20 V lithium batteries mounted on a fire truck beside an American flag, symbolizing pride, service, and American craftsmanship
Mango Bay TecHorn 4-Horn handheld train horn with 20 V lithium battery reflected in a puddle beneath a vibrant sea life mural by @drawnbylance, showcasing custom color design and creative photography
Man wearing a USA shirt holding a 'Merica TecHorn 4-Horn handheld train horn with 20 V lithium battery near a passing high-speed train, representing American pride and TecHorn power
Orange TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed in front of an airboat propeller, highlighting Florida-inspired design and outdoor adventure use
Yellow TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on a metal toolbox, showcasing compact power and rugged workshop performance
Teal TecHorn 4-Horn handheld train horn with 20 V lithium battery sitting poolside beside a basketball hoop under a clear blue sky, showcasing summer fun and sporty style
Orange, white, and black TecHorn 4-Horn handheld train horn with 20 V lithium battery displayed in front of a custom motorcycle front wheel, showcasing bold color design and high-performance craftsmanship
Teal TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on the sandy shore beside a boat, highlighting its coastal style and durable outdoor design
Thin BLUE Line TecHorn 4-Horn handheld train horn with 20 V lithium battery displayed on the winch of a Thin BLUE Line wrapped UTV, representing power, pride, and support for first responders
Green TecHorn 2-Horn handheld train horn with 20 V lithium battery held by a rider on a matching green dirt bike, showcasing custom color coordination and outdoor fun
Red and black TecHorn 5-Horn handheld train horn with 20 V lithium battery displayed under the hood of a classic 1970 Chevelle SS, combining modern power with vintage muscle car style
Young girl holding a teal TecHorn 4-Horn handheld train horn with 20 V lithium battery on a sunny beach, showcasing fun, family, and Florida-built performance
Blue TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on an airboat at the dock, highlighting marine adventure style and powerful Florida craftsmanship
TecHorn Pink 2-Horn – compact handheld train horn with 20 V lithium battery and black trumpets, displayed on a couch highlighting its playful color and modern design
TecHorn Tropical Blaze 5-Horn – handheld train horn with 20 V lithium battery and vibrant candy-fade finish blending red, orange, and green, shown in hand for a detailed close-up view
Thin BLUE Line TecHorn 4-Horn – handheld train horn with 20 V lithium battery, displayed in front of a custom blue golf cart with a Thin BLUE Line Punisher decal honoring law enforcement pride and unity
Teal TecHorn 4-Horn – handheld train horn with 20 V lithium battery, shown at the beach held by two women enjoying a sunny day near the water, highlighting its bold color and summer vibe
Purple TecHorn 2-Horn – handheld train horn with 20 V lithium battery, sitting on a beach cooler in the sand near the shoreline, showcasing its bold color and portable design for beach days and outdoor fun
Teen celebrating at a flag football game holding a black TecHorn 2-Horn handheld train horn with 20 V lithium battery, capturing the excitement and fun energy of game day
'Merica and Thin RED Line TecHorn 4-Horn handheld train horns with 20 V lithium batteries mounted on a fire truck beside an American flag, symbolizing pride, service, and American craftsmanship
Mango Bay TecHorn 4-Horn handheld train horn with 20 V lithium battery reflected in a puddle beneath a vibrant sea life mural by @drawnbylance, showcasing custom color design and creative photography
Man wearing a USA shirt holding a 'Merica TecHorn 4-Horn handheld train horn with 20 V lithium battery near a passing high-speed train, representing American pride and TecHorn power
Orange TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed in front of an airboat propeller, highlighting Florida-inspired design and outdoor adventure use
Yellow TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on a metal toolbox, showcasing compact power and rugged workshop performance
Teal TecHorn 4-Horn handheld train horn with 20 V lithium battery sitting poolside beside a basketball hoop under a clear blue sky, showcasing summer fun and sporty style
Orange, white, and black TecHorn 4-Horn handheld train horn with 20 V lithium battery displayed in front of a custom motorcycle front wheel, showcasing bold color design and high-performance craftsmanship
Teal TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on the sandy shore beside a boat, highlighting its coastal style and durable outdoor design
Thin BLUE Line TecHorn 4-Horn handheld train horn with 20 V lithium battery displayed on the winch of a Thin BLUE Line wrapped UTV, representing power, pride, and support for first responders
Green TecHorn 2-Horn handheld train horn with 20 V lithium battery held by a rider on a matching green dirt bike, showcasing custom color coordination and outdoor fun
Red and black TecHorn 5-Horn handheld train horn with 20 V lithium battery displayed under the hood of a classic 1970 Chevelle SS, combining modern power with vintage muscle car style
Young girl holding a teal TecHorn 4-Horn handheld train horn with 20 V lithium battery on a sunny beach, showcasing fun, family, and Florida-built performance
Blue TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on an airboat at the dock, highlighting marine adventure style and powerful Florida craftsmanship
TecHorn Pink 2-Horn – compact handheld train horn with 20 V lithium battery and black trumpets, displayed on a couch highlighting its playful color and modern design
TecHorn Tropical Blaze 5-Horn – handheld train horn with 20 V lithium battery and vibrant candy-fade finish blending red, orange, and green, shown in hand for a detailed close-up view
Thin BLUE Line TecHorn 4-Horn – handheld train horn with 20 V lithium battery, displayed in front of a custom blue golf cart with a Thin BLUE Line Punisher decal honoring law enforcement pride and unity
Teal TecHorn 4-Horn – handheld train horn with 20 V lithium battery, shown at the beach held by two women enjoying a sunny day near the water, highlighting its bold color and summer vibe
Purple TecHorn 2-Horn – handheld train horn with 20 V lithium battery, sitting on a beach cooler in the sand near the shoreline, showcasing its bold color and portable design for beach days and outdoor fun
Teen celebrating at a flag football game holding a black TecHorn 2-Horn handheld train horn with 20 V lithium battery, capturing the excitement and fun energy of game day
'Merica and Thin RED Line TecHorn 4-Horn handheld train horns with 20 V lithium batteries mounted on a fire truck beside an American flag, symbolizing pride, service, and American craftsmanship
Mango Bay TecHorn 4-Horn handheld train horn with 20 V lithium battery reflected in a puddle beneath a vibrant sea life mural by @drawnbylance, showcasing custom color design and creative photography
Man wearing a USA shirt holding a 'Merica TecHorn 4-Horn handheld train horn with 20 V lithium battery near a passing high-speed train, representing American pride and TecHorn power
Orange TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed in front of an airboat propeller, highlighting Florida-inspired design and outdoor adventure use
Yellow TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on a metal toolbox, showcasing compact power and rugged workshop performance
Teal TecHorn 4-Horn handheld train horn with 20 V lithium battery sitting poolside beside a basketball hoop under a clear blue sky, showcasing summer fun and sporty style
Orange, white, and black TecHorn 4-Horn handheld train horn with 20 V lithium battery displayed in front of a custom motorcycle front wheel, showcasing bold color design and high-performance craftsmanship
Teal TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on the sandy shore beside a boat, highlighting its coastal style and durable outdoor design
Thin BLUE Line TecHorn 4-Horn handheld train horn with 20 V lithium battery displayed on the winch of a Thin BLUE Line wrapped UTV, representing power, pride, and support for first responders
Green TecHorn 2-Horn handheld train horn with 20 V lithium battery held by a rider on a matching green dirt bike, showcasing custom color coordination and outdoor fun
Red and black TecHorn 5-Horn handheld train horn with 20 V lithium battery displayed under the hood of a classic 1970 Chevelle SS, combining modern power with vintage muscle car style
Young girl holding a teal TecHorn 4-Horn handheld train horn with 20 V lithium battery on a sunny beach, showcasing fun, family, and Florida-built performance
Blue TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on an airboat at the dock, highlighting marine adventure style and powerful Florida craftsmanship
TecHorn Pink 2-Horn – compact handheld train horn with 20 V lithium battery and black trumpets, displayed on a couch highlighting its playful color and modern design
TecHorn Tropical Blaze 5-Horn – handheld train horn with 20 V lithium battery and vibrant candy-fade finish blending red, orange, and green, shown in hand for a detailed close-up view
Thin BLUE Line TecHorn 4-Horn – handheld train horn with 20 V lithium battery, displayed in front of a custom blue golf cart with a Thin BLUE Line Punisher decal honoring law enforcement pride and unity
Teal TecHorn 4-Horn – handheld train horn with 20 V lithium battery, shown at the beach held by two women enjoying a sunny day near the water, highlighting its bold color and summer vibe
Purple TecHorn 2-Horn – handheld train horn with 20 V lithium battery, sitting on a beach cooler in the sand near the shoreline, showcasing its bold color and portable design for beach days and outdoor fun
Teen celebrating at a flag football game holding a black TecHorn 2-Horn handheld train horn with 20 V lithium battery, capturing the excitement and fun energy of game day
'Merica and Thin RED Line TecHorn 4-Horn handheld train horns with 20 V lithium batteries mounted on a fire truck beside an American flag, symbolizing pride, service, and American craftsmanship
Mango Bay TecHorn 4-Horn handheld train horn with 20 V lithium battery reflected in a puddle beneath a vibrant sea life mural by @drawnbylance, showcasing custom color design and creative photography
Man wearing a USA shirt holding a 'Merica TecHorn 4-Horn handheld train horn with 20 V lithium battery near a passing high-speed train, representing American pride and TecHorn power
Orange TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed in front of an airboat propeller, highlighting Florida-inspired design and outdoor adventure use
Yellow TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on a metal toolbox, showcasing compact power and rugged workshop performance
Teal TecHorn 4-Horn handheld train horn with 20 V lithium battery sitting poolside beside a basketball hoop under a clear blue sky, showcasing summer fun and sporty style
Orange, white, and black TecHorn 4-Horn handheld train horn with 20 V lithium battery displayed in front of a custom motorcycle front wheel, showcasing bold color design and high-performance craftsmanship
Teal TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on the sandy shore beside a boat, highlighting its coastal style and durable outdoor design
Thin BLUE Line TecHorn 4-Horn handheld train horn with 20 V lithium battery displayed on the winch of a Thin BLUE Line wrapped UTV, representing power, pride, and support for first responders
Green TecHorn 2-Horn handheld train horn with 20 V lithium battery held by a rider on a matching green dirt bike, showcasing custom color coordination and outdoor fun
Red and black TecHorn 5-Horn handheld train horn with 20 V lithium battery displayed under the hood of a classic 1970 Chevelle SS, combining modern power with vintage muscle car style
Young girl holding a teal TecHorn 4-Horn handheld train horn with 20 V lithium battery on a sunny beach, showcasing fun, family, and Florida-built performance
Blue TecHorn 2-Horn handheld train horn with 20 V lithium battery displayed on an airboat at the dock, highlighting marine adventure style and powerful Florida craftsmanship
TecHorn 101: From Unboxing to Blasting

Everything you need to know about your handheld train horn.

All TecHorn DIY train horn kits displayed together, featuring 2-horn, 4-horn, and 5-horn options with compressors, tubing, and mounting hardware — designed for custom builds and easy assembly
Shipping

We Ship FAST!

✔️ Free shipping within the U.S.

✔️ DIY orders typically ship within 1–3 business days

✔️ You’ll receive tracking info as soon as your TecHorns DIY Kit hits the road

✔️ Overnight shipping available during checkout

We Ship FAST!

✔️ Free shipping within the U.S.

✔️ DIY orders typically ship within 1–3 business days

✔️ You’ll receive tracking info as soon as your TecHorns DIY Kit hits the road

✔️ Overnight shipping available during checkout

Package Contents

What’s in the Box

Every DIY TecHorns package includes:
• Your selected horn array (2, 4, or 5-horn setup)
• Air hose and fittings
• Mounting hardware (excluded from “Only Horns” kits)
• Air compressor (excluded from “Only Horns” kits)

✅ Every horn is individually tested before shipping—guaranteed ready to blast.



What’s in the Box

Every DIY TecHorns package includes:
• Your selected horn array (2, 4, or 5-horn setup)
• Air hose and fittings
• Mounting hardware (excluded from “Only Horns” kits)
• Air compressor (excluded from “Only Horns” kits)

✅ Every horn is individually tested before shipping—guaranteed ready to blast.



Caring for your TecHorn

Remove Battery When Not in Use
 Prevents accidental activation and unnecessary battery drain.

Avoid Overheating
Allow brief cooldowns between extended use to protect internal components.

Store Smart
 Keep your TecHorn in a cool, dry place. Avoid storing it in vehicles or damp environments.

Keep It Clean
 Wipe with a soft cloth as needed. Do not soak, spray with water, or use harsh chemicals.

Handle with Care
Avoid drops or heavy impacts to maintain proper function and alignment.

Remove Battery When Not in Use
 Prevents accidental activation and unnecessary battery drain.

Avoid Overheating
Allow brief cooldowns between extended use to protect internal components.

Store Smart
 Keep your TecHorn in a cool, dry place. Avoid storing it in vehicles or damp environments.

Keep It Clean
 Wipe with a soft cloth as needed. Do not soak, spray with water, or use harsh chemicals.

Handle with Care
Avoid drops or heavy impacts to maintain proper function and alignment.

Warranty & Repairs

Our DIY TecHorns kits are designed for makers who want to build their own — which means every setup is unique. Because assembly methods and components can vary from user to user, we’re unable to offer warranties or repair services on DIY kits.

Each kit is carefully inspected before shipment to ensure all components meet TecHorns quality standards, but once assembly begins, responsibility for performance and safety falls to the builder.

If you run into questions during your build, our team is always happy to help with basic guidance or replacement parts (available for purchase).

Our DIY TecHorns kits are designed for makers who want to build their own — which means every setup is unique. Because assembly methods and components can vary from user to user, we’re unable to offer warranties or repair services on DIY kits.

Each kit is carefully inspected before shipment to ensure all components meet TecHorns quality standards, but once assembly begins, responsibility for performance and safety falls to the builder.

If you run into questions during your build, our team is always happy to help with basic guidance or replacement parts (available for purchase).

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!


TecHorns — The Only One


No equals. No rivals. No apologies.

TecHorns is the first and only name in fully customizable handheld train horns.

Built for those who are different and demand more — more power, more style, more sound — and won’t settle for anything less.

Be original. Be loud. Be TecHorns.

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

TecHorns!

Why Choose TecHorns Over the Other Guys?

At TecHorns, we’re the only brand offering true high-level customization — from single-color builds to themed combos and limited editions, your horn is built to match your team, your company, your style, or your event.

While other brands may offer similar horn configurations, TecHorns goes further:

  • Battery and Charger Included with every horn — no hidden add-ons or extra costs.
  • Fully Enclosed Compressor provides better protection and a cleaner, more polished look.
  • Custom-Molded Parts & Premium Materials built for serious volume and real-world use.

Every TecHorn is made to order, crafted in the U.S. with your chosen colors and features. That means it might take a few extra days to ship — but our customers agree: the quality and personalization are worth the wait.

We also offer DIY kits and mounting flexibility for modders and makers who want full control.

Proudly family-owned and inspired by youth sports and community spirit, we back every horn with pride, craftsmanship, and a 1-year warranty.

Other Brands

Battery Included

Charger Included

Customizable

Fully Encased Compressor

Upgrade Flexibility

Easy to Assemble and Use

Same Day Shipping

We are worth the wait!

Have Questions?
We Have Answers.

How long will the battery last?

 You can expect over 200 pulls (2–3 seconds each) per charge—with plenty of power left to spare

Is it waterproof?

TecHorns are water-resistant but not waterproof. They can handle splashes but avoid prolonged exposure to water for best durability. They can be used for boating.

Does this product come with a warranty?

All TecHorns include a 1-year limited warranty for your peace of mind—excluding batteries, chargers, and DIY kits.

Can I use this in my vehicle?

Yes! DIY TecHorns kits can be used in automotive installations. Please be familiar with 12-volt electrical requirements, as an additional switch or relay may be needed depending on your setup.

⚠️ Safety Tip: Always verify voltage polarity and use proper fuse protection before connecting your system.

What are TecHorn assembly times?

Our horns are custom-built. Standard processing is 5–7 business days, but may take up to 10 during busy seasons like playoffs or holidays.
Orders placed after 1:00 PM EST begin processing the next business day.

Why TecHorns?

 At TecHorns, we don’t just make noise—we make it personal. Our handheld, battery-powered train horns are built to be loud, customizable, and ready to blast right out of the box. Every TecHorn includes a battery and charger, so there’s no hunting for extras.

Choose from single-color, two-tone, or themed combos—including limited editions—to match your vibe, your team, or your event. Whether you're on the sidelines, job site, trail, or just celebrating loud and proud, TecHorns are built for big moments and bold personalities.

We use premium materials, custom-molded components, and stand behind every horn with a 1-year warranty. Proudly crafted by a family-owned business that knows how to show up and show out.