1. Cut out the end of, or remove, the plug in the end of the left handlebar grip. To cut, use a fairly sharp knife and poke through the end of the handlebar grip then cut around the inside of the handlebar. If you live in a country where you drive on the left side of the road, cut a hole in the end of the right grip.
2. The Mirrycle comes with two sizes of wedge. Use the larger of the two wedges unless it won’t fit inside your handlebar. Assemble the appropriate wedge to the mirror base using the long bolt and the barrel nut. Put the long bolt through the mirror base and wedge and then screw it into the barrel nut. Pull the wedge onto the barrel nut to secure it.
3. Place the mirror base in the end of your handlebar. Push it in so it is snug up against the end of the handlebar grip. Position the mirror base so that the top of it tilts far forward (about halfway between straight up and parallel to the ground. If you have bar ends, position the mirror base so that the top tilts further down and out of the way of the bar end. Use the hex wrench that is included to tighten the bolt until the mirror base is secure in the end of the handlebar.
4. Attach the mirror arm to the mirror base. Put three small washers on a cap screw and insert it into the hole in the elbow end of the mirror arm. Now put a big washer on the cap screw and screw it into the mirror base and tighten it using the hex wrench. The cap screws are an extremely tight fit when screwed into the brass inserts. Keep the hex wrench pushed into the head of the cap screw while turning it. Don’t worry about breaking any of the parts.
5. Attach the mirror holder to the mirror arm. Put one small washer on a cap screw and insert it into the countersunk hole in the mirror holder bracket. Put a big washer on the cap screw and screw it into the mirror arm and tighten it using the hex wrench included. As stated in #4 above, the cap screw fit into the brass insert is extremely tight.
6. Take a ride on your bike on a quiet street and adjust the mirror to get a good idea of what your view will be.