I’ve used them on my metric cruiser for years. I fabbed up my own mount. I will say this, they do not hold up in my experience. Mine last approx. 3-4 years. But they are cheap enough.

But on my ‘16 FLHTK, I went with the Custom Dynamics Mini Beast. It looks better.

 

2010 RK ----took off the cowbell wannabe horn and the Wolo Bad Boy mounted to the stock cowbell stud. A little work getting the wiring all put together right but I am **** about routing and such. Works great and yes they will hear you.

 

My WOLO lasted 6-8 months if I remember right. I spent the extra $10 and bought a Denali that has been going strong for close to 4 years now. I also mounted a car horn that adds to the sound, gets people's attention quick.
GET OFF MY LANE!

 

I put a Wolo on my Dyna 7 years ago and it is still working great. I was impressed enough to put another Loud One on my Ultra...no complaints.