No problem - go ahead
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Most Rizoma mirrors come with a selection of bolts, but ask the seller if that's indeed the case.
Your bike probably have 10mm bolts - one of which is left hand threaded (usually the right side)
You also have to buy bike specific brackets (between the mirrors and handle bar/master cylinder mounts)
If you can find an E-marked/homologated Rizoma mirror you like - get it, because it will have a large convex glass - good for a wide field of vision.