The Steam Packet Company says it brought more than 12 per cent more motorbikes to the Southern 100 this year.
The ferry company says 997 bikes and 7,700 passengers travelled to the Island by ferry for the race meeting.
Last year, 883 bikes came to the Island to watch the action on the Billown circuit.
Steam Packet chief executive Mark Woodward says the event is clearly growing and the number of bikes compares favourably to the last year's Festival of Motorcycling, which attracted around 4,000 machines.
Special healthcare recruiting event this summer
Date set for flagship maritime industry event
14th Aviation Conference takes place this week
Financial Intelligence Unit releases guide on spotting modern slavery
Total of 70 ships and companies sanctioned over Ukraine war
New stamps celebrate Island supercar culture
New survey to gauge how confident businesses are
Tynwald to consider scrapping some government agencies