Clamp on Mirrors - Motorcycle Mirrors that you can use to clamp onto your handlebars. These are particularly good if your existing mirror holder (mirror boss) has been thread stripped or there's an old broken piece of mirror stem in place. Just clamp the new clamp-on mirrors to any spare space on your handlebars. There are various lengths of stems, colour and shapes to choose from. Some clamp type mirrors you will have seen on old scooters where these are clamped to a spotlight bar or similar type of round bar.