Gear Reviews

Honk Honk! Stebel Nautilus Air Horn Installation and Review

In London, I use my horn a lot (ooh-err!) As such, I found my standard horn a bit inferior and decided to pimp it for a large and loud horn that everyone would make everyone sit up and take heed of (ooh-err!)

Enough of the double entendre’s, let’s get down to business with this Stebel Nautilus air horn. Hailing from Italy, Stebel have a well established reputation for producing quality horns that make a lot of noise. Their Nautilus horn has been around for a number of years and is popular for it’s convenient size and noise, but even better, they have this Compact version which is perfect for motorbikes.

I purchased my Stebel Nautilus Compact off ebay a few months ago from a seller in the Netherlands who supplied it as a kit with all the necessary wiring, connectors, relay etc. I paid just under £40 including postage – bargain!

Purchase a Stebel Nautilus horn off ebay.

Thankfully, the Fazer has plenty of space within the bikini fairing to accommodate the horn. I have however seen others who have split the horn in two to ease mounting and connecting an air pipe up between halves.

My first job was making a specific bracket for the horn. I used a length of drawn steel (from B&Q), which I then cut, bent and drilled accordingly. I recommend making a template from card first and do make sure your chosen position doesn’t hinder the forks when turning… Once I had the right shape, I gave the bracket a lick of Hammerite to keep it rust free.


The next job was wiring. To get the most out of the Nautilus you need to power it direct from the battery via a relay hooked up to the original horn switch. This is nowhere near as complicated as it seems. The relay (hidden behind the rectifier in the above photo) has four connectors, two go to your existing horning wires, one to the battery live, one to a suitable ground. By default the Stebel Nautilus is not supplied with any wiring, but many sellers will bundle it with all you need, just double check. Wiring diagrams are also supplied for  wiring the Nautilus in parallel with an existing horn if you so desire.

And here it is, the finished horn all fitted. My fairing does partly obscure the horns, but isn’t enclosed enough to affect the sound much.


How does it sound? It’s definitely loud, certainly louder than the stock Yamaha horns. With a reputation of being one of the loudest horns out there and an on paper spec of 140dB, I was however expecting a little louder to be honest. It is however only rated at 140dB at 4″ away, at 2m it’s just quoted at 115dB. I think it’s just a case of overly exaggerated expectations. Being an air horn, it has a very distinctive sound too. Below is a video of the Nautilus in action, showing exactly why it’s an invaluable gadget.

Overall, definitely a worthwhile mod, fairly cheap and easy enough to fit. Barely a day goes by in London when I don’t have to resort to this horn and I genuinely believe it has save my ass many a time.

Rating 5/5

More info on the Stebel Nautilus Compact on the Stebel website.

Pop by ebay and see what deals you can find on a Stebel Nautilus horn.

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By Arthur

Seasoned London commuter, doing my best to stay rubber side down and never stop moving forward.

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