Bigger 'ooter

[reasty]

I want to upgrade - looks like the early suggestions on this involved remotely sighting compressors and wiring looms.

Any suggestions re a louder bolt straight on replacement?

[54K+]

on the old CBF 100 everyone was straight swapping for a Stebel Nautilus? Have a look
http://www.amazon.com/Stebel-Nautilus-Universal-Motorcycles-Scooters/dp/B00CMX20H4

[Si Click]

I have a Nautilus on my CB500S.  Perfect for commuting in and out of London. Way more presence than the standard squeaker.
But........
It is much larger than standard, was too big to fit on my VFR and I cannot see where it would fit on the CR. 

[Gain]

I'm pretty sure I could find somewhere, it's quite a big bike 
Other than that, try a car horn that has a higher / lower tone as an add on.

[Si Click]

Originally Posted by Gain

I'm pretty sure I could find somewhere, it's quite a big bike 

It's quite a big horn.