I to use a RAM mount. I bought this from
.www.adventure-motorcycling.co.uk
I bought it to use on my Fazer and it came with a earpiece and power connectors. The the Ram Mount is atttached to the bike by a "stud mount" which is a replacement for one of the bar riser bolts that has a rubber ball to attach the Ram Mount to.
When we got the Triple I just bought an extra stud and power cable. They dont advertise one for the triple but I just measured the original stud and they sent me a matching one. I think the ST one fits.
It works reaally well the unit ends up right in the centre of the bars, when you dont want the GPS unit the only thing left on the bike is the stud and hidden paower cable. I can still use the GPS on the Fazer.