The Stebel Nautilus Air Horn could save your life! A bold statement but true. Besides additional lighting, the single most important thing you can do to your motorcycle is add LOUD horns. Are you sick and tired of some cage trying to take your lane while you happen to be using it? Don't you hate it when you hit that cheesy, Spanish made factory horn on your high dollar motorcycle and the sound coming out seems more appropriate for a Vespa instead of the road god that you are? Yes.. we've all been there. Don't get mad... get LOUD with the 139db Stebel Nautilus air horn.

To make your install chimp-easy, we also provide an optional Plug-N-Play Wiring Harness which makes wiring your relay a lot easier.. especially for those, like myself who are "challenged" when it comes to wiring anything. I used this kit on my bike and it made the install a breeze. Do you really need purchase the optional harness? No... If you are familiar with wiring and relays, you can wire things just fine without it. Do I recommend the optional harness.. yes. 100% up you you, mate. The Plug-N-Play Wiring Harness allows for almost no splicing, cutting, crimping, or trips to the hardware store. Just tap one lead to your original horn trigger wire, one lead to battery ground, one fused lead to battery positive, one hot lead to the Nautilus, and then plug the harness into the Stebel's relay. That's it!. The kit also includes (1) 30 amp fuse, connectors, and instructions.

The Italian made Nautilus Air Horn comes with a single 8mm mounting bolt and nut, as well as a relay for providing a direct, high current attachment to the motorcycle's battery. No wires, fuses, or bike-specific mounting brackets are included. Just make sure you wire the included relay properly, as replacement horns used without a relay don't get enough electrical current to be fully effective. Trust me.. I tried mine without the relay and it did NOT work as well.

Note from Manufacturer: This horn should be mounted so that the cylinder is vertical (with the horn facing down). There should be no more than a 15 degree variance from the vertical position. If it is not mounted per these specifications, then the horn may cease to function after a period of time. Follow-Up From Pirate: I installed mine in a horizontal position and it's worked perfectly for 4 years. I'm just sayin.'

Note from Pirate: On many bikes, including the BMW K1300S, K1200S, K1200R, & K1300R there isn't much room under her panties..er plastic for any aftermarket horn. I installed the Nautilus on my own K1200S and it was a challenge, but the end result was worth every penny. Don't expect this horn to just drop in where the factory horn was. Not gonna happen. The size of the Nautilus is 5.9" x 4.4" x 3.7" For a few install idea pics on a BMW K1200S or K1200R... email me. If you need/want/desire a smaller aftermarket horn.. Check out our other aftermarket horn option.. The Stebel Magnum. Lastly.. I also installed the Nautilus on my 2008 Ducati 1098 and amazingly, it was the easiest install I've ever done. (see link below) Plenty of room under the right side plastic.. especially if you remove the Evap can. Just make sure you don't block your right side fan.

Technical Specifications:
* Sound Output: 139 freakin' dB
* Operating Voltage: 12 Volts
* Absorbed Current: less than 18A
* Fundamental Frequency: 530 Hz & 680 Hz
* Weight: 0.6 kg (1.3 lbs)
* Dimensions: 5.9" (150mm) x 4.4" (112mm) x 3.7" (95 mm)
* Reaction time: less than 90 milli-seconds