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The organising club has upheld its decision originally made in December.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:-
Motocross: Over 30 riders to travel to Sherwood
Competitors range from six-60-years-old
FC Isle of Man searching for first win under Holden
Ravens take on side bottom of NWCFL
FC Isle of Man suffer 3-1 defeat against South Liverpool
Ravens slip to defeat despite early goal from Charlie Higgins
Hockey: Four teams remain unbeaten across divisions
Several inter-club derbies also penned in on Saturday (11 Oct)
Rugby: Douglas to host Winnington Park
Vagabonds and Ramsey both on their travels this weekend