From the 2018 Harley-Davidson Genuine Motor Parts + Accessories Catalog
Loud Side-Mount Horn Kit
Part Number 69060-90H <--- H version
Price: $44.95
Get Noticed! Ride with increased confidence with a loud horn that will grab everyone's attention.
o Engineered to be 5 dB louder (at 2 meters) than the '13-earlier Original Equipment side-mounted horn.
o Designed to be a plug-in replacement that is easy to install
o Horn is stock on '14-later models equipped with side-mount horn covers
o Fits with all H-D side mount horn covers

 

Yeah, I had some chucklehead in an SUV try to come into my lane the other day, too - I hit the horn to wake her *** up and was surprised how much louder it was than my ‘13’s horn.

Of course, that was after I’d turned on my left blinker and my high beams. Between the lights and the horn, she KNEW I was serious. :-)

 

Yep, my 2017 RGS is pretty loud... Nice!

 

I am truly surprised that y'all don't give that button a push when you be going through controls and things when you first get it!!! I know I did! (how sick sounding is this thing??? oohhhh....that is sick!!)
I have the Custom Dynamics Mini-Beast.... small plug and play air horn....sounds (to me) like a deuce-and-a-half!!! You Army guys will know what I mean!!! It is much louder than stock. I want to shock and awe the idiot coming at me!!!

 

Manly is more bass and fuller of sound. So it matches the bike.

Non manly is the sound of older stock horns.

 

Will a Flux Capacitor fit under the seat of a FATBOY Lo or do I have to mount it on the rear fender. We will make it fit somehow. 😨

 

This really helps:

https://www.lifesaverhorn.com/

 

that's easy. instead of 'beep' it goes 'beer'.....

sheesh. some people

 

Head over to the audio section.. you can hook a amplified subwoofer and component speakers to the horn button for a mucho manly full audio range blast...knock them out of your lane with a sound wave