Kauai authorities have identified the motorcyclist who died in a crash Wednesday in Koloa as 21-year-old Byron Hahn-Morin of Waimea.  Hahn-Morin was traveling west on Koloa Road, just west of Omao Road junction when he veered off the road during a sharp curve.  The crash happened just before 3:30 p.m.  Hahn-Morin died as a result of the injuries he received in that crash.