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The organising club has upheld its decision originally made in December.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:-
FC Isle of Man continue losing run in NWCFL Premier Division
Ravens league struggles continue
FC Isle of Man seeking league boost against Longridge Town
Ravens currently on three-match losing run in NWCFL Premier Division
Hockey: Mixed cup semi-finals take centre stage
Shot at silverware in a few weeks' time up for grabs
Football: Wayne Brown appointed IoM Women's Team Manager
He succeeds Wayne Lisy who stood down in August
