Hornit dB140 Bike Horn, Upgraded V3 Model, World's Loudest Bicycle Horn for Increased Rider Safety, Remote Trigger and Upgraded Mounting System Included

A great horn, it is expensive for what it is, but it’s a needed safety device on the streets. Be sure to change the sound with the button on the horn itself, hard to see and not in the instructions. It makes 2 sounds, an Alarm sound and a Beep sound, which is best for traffic.

I'm a daily bike commuter and I've had this for 3 years. It's still working and I haven't even needed to change the batteries yet. It is loud enough to get the attention of drivers with their windows up which is really important. Little metal bells don't cut it with drivers. It has a simple, single-button interface. No switches or apps. I like that a quick tap makes a slightly less loud chirp for warning pedestrians and other bikers, otherwise I just lay on the horn to make sure that cars know I'm there. This is a must if you are sharing the road with cars.

Okay so it is genuinely very very loud but a couple things I don't like are the fact it is powered by batteries and you need to use a screwdriver to get the battery compartment out. It would have been much better if it was rechargeable. The other thing is the fact that there is a button on the actual horn that literally says h on it and you would think it's for the horn but no you can't control the horn with that but you have to use the extension which takes up more real estate on your handlebars. I'm guessing the h button is to change modes but sort of stupid honestly. It is extremely loud however I would have liked if it was a little bit more like a traditional horn sound because this honestly sounds a little obnoxious but at the end of the day I just want drivers to see me.

Loud and annoying the way I wanted to be to stupid people or those not paying attention

It's loud AF and easy to set up.

Great horn but when it’s cold it defers to the horn sound I don’t like to use and I can’t change it to the preferred sound until the weather gets warmer.

**Hornit dB140 Bike Horn, Upgraded V3 Model — Product Review** **Overall Score: 8 / 10** ----- **Sound Level — 9.5/10** This is the horn’s headline act, and it absolutely delivers. At 140 decibels, it’s claimed to be the loudest cycle horn on the market louder than the average car horn, which sits between 110 and 115dB. Two horn modes are included: “piercing mode,” a high-pitched 140dB dual tone designed for road use to be heard by drivers and pedestrians wearing headphones, and “horn mode,” a 121dB car horn-style sound designed for parks and trails. Be warned though the packaging itself states that prolonged or reckless use may cause permanent hearing damage, so this isn’t something to lean on casually in a quiet park. **Quality — 8/10** The exterior is mostly plastic with a flat black finish, sharp creases along the edges, and a thin rubber bumper around the rear that provides protection against falls or contact with other surfaces. It has a purposeful, understated look that won’t look out of place on any bike. Build quality holds up well over extended use riders report no significant issues even after a year or more of regular commuting. **Durability — 8/10** The horn is completely weatherproof, though not submersible, which is reassuring for commuters riding in unpredictable conditions. Hornit backs it with a minimum 2-year manufacturer’s warranty. The main durability concern raised by users is the wired trigger cable the cable can sometimes get tangled and risks damage over time, which is the V3’s most notable weak point. **Fit & Mounting — 8.5/10** The V3 upgrade brings a genuinely useful improvement here. Two handlebar mounts are included —one for bars with a diameter of 22–26mm with four differently sized spacers, and a second dedicated to 31.8mm diameter bars. The Garmin-style quarter-turn mount makes it easy to remove the horn when needed and allows you to swap it between bikes if both have a mount installed. The remote trigger is a smart safety feature it allows you to keep both hands on the handlebars while activating the horn in traffic. **Battery Life — 8.5/10** The dB140 runs on 2 AAA batteries rated for up to 12 months of normal use, based on six one-second blasts per day. For most commuters and recreational riders, that’s a very low-maintenance power requirement. **Price / Value — 8.5/10** The horn carries an affordable price point around $34.95 for what is genuinely a category-leading piece of safety equipment. Its robust build, ease of installation, and long battery life make it a worthwhile investment for any cyclist prioritizing safety. **Rider Experience — 7/10** The one area that divides opinion is comfort for the rider. Both volume settings can be uncomfortable for the person using it the 140dB mode is particularly piercing, and even the quieter 121dB setting is significantly louder than competing horns. Most reviewers suggest sticking to the 121dB mode, which is still plenty loud but has a more natural, recognizable sound that gets quicker reactions from pedestrians and drivers. ----- **Bottom Line:** The Hornit dB140 V3 is the gold standard for bike horns and a legitimate safety upgrade for urban cyclists. It’s loud enough to be heard through car windows and headphones alike, mounts securely to virtually any handlebar, and won’t drain your wallet. The wired trigger cable and ear-splitting volume on max mode are the only real gripes — but for city commuting or trail riding where being heard can prevent an accident, it’s hard to argue against it.

There are two settings. One that sounds like a regular bike horn and one that sounds like an emergency vehicle behind. You is very loud and very high-pitched and will definitely get people‘s attention.

Un espectáculo te salva la vida se escucha muy fuerte los coches paran y dan paso en las rotondas aun que sean con ventanas subidas. Lo recomiendo muchisimo esta hecho de materiales de calidad se puede montar y quitar fácilmente. Eso si si no lo montes permenente en el manillar la probabilidad que te lo rroban es muy alta asi que no hay que olvidar quitarla cuando guardes la bici en la calle

Bello rumoroso si spostano tutti

Bra ljud

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.

Really great horn! Genuinely loud. 2 modes. I would say this is a necessity for safety while cycling. Not too difficult to install. Recommended 👍🏻