Any hopes a last minute compromise would allow the Mid-Antrim 150 races to go ahead have been snuffed out.
The organising club has upheld its decision originally made in December.
They say there are still major differences between the club and the Motor Cycle Union of Ireland.
T.T. star Adrian Archibald says it's a blow to his sport in Northern Ireland:-
Football: Island club wants community to design new crest and kit
Gymnasium AFC & Douglas Athletic FC merged during the summer
Boxing: Devine defeats Paredes to continue unbeaten run
Manxman moves onto 12 pro victories with unanimous points win
Athletics: Island athletes shine at British Masters
Seven-strong team claims 11 medals in Derby
Date confirmed for funeral of Sam Naughton
Isle of Man rider died following incident at this year's Manx Grand Prix
