I fit my SMH-10 to the C3. RevZilla is right about the slider, it is right where you would put the base for the SMH-10. I used the alternate base, the one for earbuds and set it back on the helmet just rearward of the slider. I used the included double sided tape and moved the mic inside so it comes out behind the cheek pads. Works 100% Here's the base I use: http://www.revzilla.com/motorcycle/sena-smh-10-helmet-clamp-kit-earbuds-with-boom-and-wired-microphone
1 year, 2 months ago

by
Gromit
Rochester, NY USA