Andrew Tolley, 29, of Bridlington, suffered fatal injuries in the crash on the B1229 between Buckton and Bempton just before 3pm on Sunday (Sept 2).
There were no other vehicles involved.
Humberside Police said relatives of Mr Tolley, who was known as Andy, are being supported by specialist officers.
Any witnesses or anyone with information is asked to contact North Yorkshire Police, quoting log 364 of 2/9/18.