With your GPS device in a bike mount on the handlebars, you always know how to find your way safely on the bike. Bike mounts are available for smartphones, sports watches, bike computers, and hiking GPS. Some bike mounts on this page are made for specific devices. Make sure you choose a bike mount that's suitable for your GPS device. It's also important that a bike mount with handlebar mount fits on the handlebars of your bike. First, measure the diameter of the handlebars.