 The 1971 event was won by Australian Jack Findlay in what was the Ulster Grand Prix's last year as part of the FIM Grand Prix international motorcycle racing calendar.Findlay's victory on a Suzuki was also notable for marking the first 500cc class win for a motorcycle powered by a two stroke engine.The event was cancelled in 1972 because of the political situation in Northern Ireland, but it was held in 2001 during the Foot-and-mouth crisis, even though the North West 200 and Isle of Man TT were cancelled that year.