I’d like to replace the limp-wristed, apologetic-sounding Bellagio horn, but I haven’t had much success so far. I was interested in the Screaming Banshee http://www.screamingbanshee.co.uk, but they no longer seem to have a UK distributor. Has anyone replace their Guzzi horn with something better they can recommend and which is easily available in the UK?
I highly recommend the snail horns from M&P ( the old busters site) 120db twin horns, thay scare the shit out of truck drivers lol 
Plus one for that, you can also get them in high/low combinations for that authentic Italian 0.1 seconds slow off the traffic lights experience.
I thought it was 0.1 nano seconds.
Snails ordered. Thanks to everyone.