I use the Zumo 550 and it came with a bolt on ram ball designed to attach to regular handlebars. I have attached mine to the top triple tree as the following photo's. I have since transferred it to the left hand post as it was in the way of the LCD display. It 'does' obstruct the speedo a bit now but speed is displayed on the satnav so not a big problem.
R1200R TC
R1200GS TC. Triple Black. It has to go sadly...
R1200S. It’s gone. Had it 11yrs. My favourite bike in 44yrs riding.