This KCNC handlebar mount is suitable for Garmin navigation devices/computers and GoPro cameras equally. You can install the GoPro camera easily and securely under the Garmin mount. The handlebar mount provides a safe attachment in many different mounting positions and angles.
Garmin Edge 20/25/200/500/510/520/800/810
Garmin Forerunner 310XT/910XT
For 31.8 mm clamp diameter.
Fact Sheet of KCNC Handlebar Mount for GoPro and Garmin Devices