Lewis Clark, a 22-year-old chef, died while riding on a mountain road on the island on Sunday, August 30.
An inquest into his death opened today (Tuesday).
Mr Clark was riding on the A18 mountain road near to the Black Hut when the accident happened.
A post-mortem examination by pathologist Dr Christopher Clague found Mr Clark died as a result of injuries to his head and body consistent with a motorcycle accident.
The accident, which happened at about 1.30pm, closed the road.
Workmen from the Department of Infrastructure worked through the night carrying out repairs to the surface before racing, scheduled for Monday, August 31, was able to take place.
The inquest was adjourned pending further enquiries.