Graves Motorsports Yamaha R1 + R6 Billet Aluminum Barend Mirror Adapter. Sold each (1) these motorcycle bar end mirror add-on pieces work seamlessly with the BEY-04R1 bar end kits to allow mounting of popular aftermarket handlebar mirrors like the CRG setup pictures.
Note you must have a BEY-04R1 bar end kit and be using a 04-22 R1 or 06-21 R6 to use this mirror add-on