Try here...
http://www.moorespeedracing.co.uk/rizoma-led-indicators/rizoma-front-fairing-indicator-adapters.html
You need the FR218B part (for a Triumph Daytona, Street/Speed Triple, they share the same indicators as the Tenere)
There are possibly slightly cheaper (and inferior) versions on eBay.
Just realised where you are! So try here...
http://www.mybikeparts.com.au/indicators/413-rizoma-indicator-spacers-for-triumph.html#.UkWVzyqF_1o