Good morning----You should give a look at the brand new Michelin GP track day tire, it is a serious performer, both on and off the race track. It was just introduced this year. You can call me directly with any questions regarding this awesome tire. Have a great day!
If you're riding an R3 or Ninja 400 there's an option of using a Rosso III on the back and a Supercorsa on the front for better rear tire life. The previous version (Rosso II) was the race tire in the European SS small bike series before Pirelli introduced the race compound Supercorsas in these sizes.