Dunlop motorcycle race tires do not have issues with "heat cycling" that may affect other tire brands.
If Dunlop tires begin to lose grip it is more of issue of a loss of rubber than heat cycling.
New Dunlop tires are their maximum traction level as the level of rubber on the tire is highest. The tires run hottest at this point in the tire's life. As Dunlop tires lose rubber they begin to run cooler and slowly lose their maximum grip.