Police say 53-year-old Jeffry H. Muir of Moscow was traveling west on State Highway 8 on a 2011 Harley Davidson Fatboy at about 9 p.m. on Saturday.
Police say Muir attempted to pass a vehicle but failed to negotiate a curve and went of the south edge of the highway.
Muir was ejected from the motorcycle and died at the scene.
Police say he wasn't wearing a helmet.
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