Yuma police say Wayne Helms was riding westbound on 16th Street near Gateway on Saturday afternoon when his motorcycle was struck by a Chrysler.
Police say the impact caused him to land in the road and he was then subsequently hit by the Chrysler, resulting in fatal injuries.
Investigators identified the driver as 18-year-old Rooslin Gomez.
It was not known if any charges would be filed against Gomez.
Police are still investigating.