Originally Posted by ChrisSlicks

You need new front rotor rings and a front hardware kit. Replacing the rings is easy, just need about 45 minutes per rotor and an accurate inch-lb torque wrench.

The heat stress checking on the rotors isn't that bad, I ran mine for several events in that condition before eventually replacing them over the winter. It's not really a concern until the cracks spread all the way to the outer edge.