

🔔 Make your presence impossible to ignore!
The Hornit dB140 V3 is the world’s loudest bicycle horn delivering a piercing 140dB sound designed to enhance rider safety. Featuring two distinct horn modes tailored for urban and trail environments, it mounts easily on a wide range of handlebars with included Garmin-style mounts. Lightweight and battery-powered with simple one-hand operation, it’s engineered to reduce stress and increase awareness on every ride.





| ASIN | B09LDF9KMQ |
| Age range | Adult |
| Batteries | 2 AAA batteries required. (included) |
| Batteries included? | Yes |
| Best Sellers Rank | 16,037 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 45 in Bike Bells |
| Brand | Hornit |
| Color | Black |
| Compatible with | Headphones |
| Customer Reviews | 4.4 4.4 out of 5 stars (880) |
| Date First Available | 28 Oct. 2021 |
| Department | Unisex |
| Features | One-Hand Operation |
| Item model number | dB140 V3 |
| Manufacturer | Hornit |
| Material type | Plastic |
| Number of items | 1 |
| Product Dimensions | 9.78 x 4.83 x 4.19 cm; 102.06 g |
| Size | One Size |
| Sport | Cycling |
| Style | V3 |
V**N
THAT IS LOUD! Loved it
THAT IS LOUD! If you're a commuter, it could save lives! Batter lasts long, easy to install on the bike and it fits a big variety of handlebars, the button works fine, it really alerts people and cars, very loud, the loudest I ever had considering the battery and size. Really recommend it.
D**F
Yes, its loud!
This is certainly loud! Two tones to choose from, but the actual hooter noise does the job, it gets peoples attention. Simple to fit, and does not take up too much room.
A**R
Very loud, very good
I have had this for a couple of months now, riding on everything from urban residential roads, to cycle ways and bridle paths. It is an excellent product, very loud (in both sound modes) and seems more than adequate to get the message across to both pedestrians and all other road users. In addition, it's worth noting that the switch (which you put on the handlebar or grip) is easy to use while wearing gloves, something that has been a problem for me with other more conventional bell designs. If you get one of these, put the batteries in and take it outside before testing... you might be surprised how loud it is in your front room!
J**N
Good but comes with flaws
A well constructed but not waterproof unit. If any rain gets into the unit it will stop working, the button can be replaced quite cheaply from the HornIt website, but the main unit will set you back another £30 (current Amazon price) to replace if it breaks due to water damage. This is the biggest negative feature. Unit comes with "Garmin like mounts" but the official Garmin mounts are too small for the unit and cannot be used so they are not interchangeable. The brackets supplied don't fit every handlebar size, contrary to claims otherwise. The large bracket cannot be used with the supplied spacers underneath, due to how the spacers and larger bracket are designed, meaning the large bracket fits 32mm handlebars only. The smaller bracket fits 22-26mm handlebars, leaving an incompatibility issue for any handlebars measuring between 27-31mm. Unit is clearly designed for road / gravel / touring bikes not MTB, contrary to claims otherwise, as it will not fit most MTB handlebars and the intended use case of the product is to be loud enough for pedestrians to hear over busy traffic. The hornIt on a MTB trail, despite the advertisement, would be, too loud and too aggressive. On a road bike it takes up a significant amount of room of the handlebar. The louder 140db bird chirp like sound seems to cause confusion, a stop and look confused like a squirrel in headlights, in the majority of pedestrians, possibly because it's a sound which is very unfamiliar on the road, but the quieter, still loud enough for busy road use, horn sound most pedestrians respond well to, in the same way as they do to a car horn sound. Everyone knows what a horn sound means. Pedestrians with headphones in who walk into the road like zombies still cannot hear it. It is by virtually all measures better than a bell on the handlebars for its intended use and can be heard over rush hour traffic by both pedestrians, other cyclists and from inside cars in most cases.
S**R
Hornit bicycle horn
When,it's said,this is the loudest bicycle horn,I agree,it's ears piercing, 😆.
M**N
Nice and loud
Great for letting old people know you dont like them. I wear them like rings and can now sonic blast my enemies. Good quality everything and very simple to install on a robodog and send after the postman. Great value for funny
G**O
It Works Well
Its very loud just perfect
M**N
Best off finding another solution
Bought in Jan 2024, was great initially and great product concept. However, it has gradually worked less and less well until now not working at all. Not great for a safety-focused product you need to rely on in London traffic! Not sure if it's the activating button that no longer works or the horn itself. Going to have to buy another horn (since > 1 year), try it, and if it's no good. If it's the button, I'm not sure I can be bothered to undo the neat tape wrapping I've done to hide the wire from the horn to the button.
J**E
Bra ljud
R**K
Je n'ai pas eu de difficulté à l'installer. Le mode d'emploi était clair d'en mes souvenir. Après plusieurs mois d'usage, rien à signaler d'alarmant. Dommage que qu'on ne peut pas gérer le volume car c'est vraiment fort fort bruyant même pour le cycliste.
H**S
Really great horn! Genuinely loud. 2 modes. I would say this is a necessity for safety while cycling. Not too difficult to install. Recommended 👍🏻
D**S
Haven’t used it on my scooter but let me tell you, this is loud. Annoyingly loud. It’s going to get the job done. When it says it’s “piercing” , it truly means that. The controls are simple and the mechanism used to initiate the sound is able to be placed in a discreet area so that it doesn’t interfere with other controls. Sweet man.
O**N
lightweight, loud, one-button controls all, great price/loudness/quality ratio used for summer commuting to work recommend
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