On Twitter, North Yorkshire Police Traffic Bureau said at the bike night yesterday evening, speeds of up to 104mph were recorded in a 60mph limit.
They said: "Whitby bike night proves to be a popular gathering however we’re seeing a higher number of irresponsible riding.
"Last night speeds of up to 104mph were recorded in a 60mph limit.
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"This kind of behaviour will not be tolerated! Our enquiries will begin shortly on these riders."