Graham Bell, of Dryinghouse Lane, Kelso, was hurt in the crash with another biker at the event at Cardenden near Lochgelly on Sunday.
He died in Edinburgh Royal Infirmary five days after the accident.
The other biker involved, a 61-year-old from Earlston in the Borders, was taken to Queen Margaret Hospital in Dunfermline with minor injuries.
A report will be submitted to the procurator fiscal.
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