Been doing trackdays for years on NSR's and never found the need for slicks, always used supercorsas, the trouble with slicks, unless you are a reasonably fast club racer at least, you wont be able to keep enough heat in them to perform properly. Even my son who was a national and international racer doesn't even bother with them when he takes my RS250 out for a spin occasionly.
_________________
Proud Father of , 05 ktm 400exc supermoto 2018 honda crf rx supermoto