Billet Bar End For CRG Mirrors
This expansion plug allows use of CRG bar end mirrors on Rizoma Biconical (or other hollow ended, including stock Aprilia/Moto Guzzi) handlebars.
This adapter is also required for mounting the CRG Arrow series mirror.
If you're looking for a way to mount bar end mirrors to any of the below listed models, this really is the easiest, cheapest, and most secure way:
Medium Strength Threadlock strongly recommended.