Hornit dB140 cycle horn V3 - Black

According to ROSPA, 57% of cycle accidents occur because the "driver failed to look properly". The dB140 is the loudest bicycle horn on the market, putting you in control of your safety by letting people know you’re there. It’s small, sleek and enables you to alert distracted drivers and pedestrians to your presence. Featuring a brand-new Garmin style mount, your dB140 is better than ever: rock solid on the bars, easy to remove and interchangeable with other Garmin compatible devices.

The world's loudest bike horn

140 decibels is the equivalent sound of a jet engine and is 4 times louder than the nearest competitor. You can alert drivers of cars, buses, lorries & pedestrians to your presence. It has two sounds - a piercing 'road' mode (140dB) and a lower pitched car horn sound (121dB) for cycle paths. The remote trigger means it is safe and easy to use when braking, while being easy to install and remove thanks to the Garmin style mount, the dB140 fits all bicycles. Completely weatherproof (although not submersible), the dB140 is a potentially life-saving accessory when riding in towns and cities.

To ensure a perfect fit with all handlebar sizes two mounts are included - one mount for bars with a diameter of 22-26mm with 4 differently sized spacers and a second dedicated for 31.8mm diameter bars (road bikes). You can use your spare mount on a different bike so you can easily swap the dB140 from one bike to another.

SKU 467648V3
Barcode # 5060509922468
Brand Hornit
Shipping Weight 0.1500kg
Shipping Width 0.053m
Shipping Height 0.103m
Shipping Length 0.130m
Shipping Cubic 0.000709670m3

very loud - can there be another sound?

By: on 27 August 2026
I've been using the Hornit for 3 years on the extensive shared path network in Canberra Australia. I bought it because a lot of walkers and runners have earpieces and don't hear a normal bike bell. It works well! The only thing I find is that some walkers and runners hear the sound and think it's a car and ignore it. Is it possible to develop another sound like a loud bike bell so that walkers and runners hear a bike sound rather than a car?
(5)

Literal lifesaver

By: on 18 August 2026
This horn has saved my life from distracted drivers on at least 4 occasions now. Essential kit for anyone cycling on ""shared spaces"". Loud enough to be heard even through a car window, it's perfect for getting people to look up from their phones or to warn drivers not to drive out in front of you as you are passing a junction. NB - this is for use with drivers only. Never use it at a pedestrian or other cyclist.
(5)

Product review

By: on 18 August 2026
Had one with the light as well so knew how effective it is. I run cameras as well used as a reminder that close pass will be reported. Have to a bit of packing on the handle bars as they are imperial. The delivery company is rubbish. Waited in from 17.30 until the 23.30.Tracked the parcel at 21.30 within 3 minutes walk from the house. The"we have it". Contacted the supplier it was eventually delivered. My house faces away from the road with a walled back yard. It was clearly marked Fragile the wall is 6ft with 3ft of hedge package landed on a concrete path. Normal procedure for the delivery company. Product good supplier good for sorting out delivery. Delivery company the worst I have experienced
(5)

Finally! Something to compete with Boston traffic!

By: on 18 August 2026
I have been biking around Boston for about 20 years and this whole time I have just been yelling at cars. That yelling has been replaced with this great bike horn! I would recommend this to anyone biking around heavy vehicle traffic! I really like the button design. Perfect for little blips or just leaning on the horn when a truck is about the run you over.
(5)

Great Customer Service

By: on 18 August 2026
So i ordered the horn. Delivery was good. I opened horn put batteries in it, plugged switch in and horn worked once. I replaced batteries and same thing happen. I emailed customer service and they replied quickly and sent me a replacement horn. I said wow, that was great service. Horn is loud. It has 2 settings, alarm like sound and horn type sound. One volume setting only. I wish you could turn sound down a little specifically for riding on public trails.
(5)

Write a product review