Originally Posted by przjohn
Boiling the brakes is pretty common on Dirt bikes. The fix is a solid rear rotor, not sure if anyone makes one for the 990, Motul RBF 600 fluid, and the most important one, adjust the brake lever. The solid rear rotor helps disipate heat better, the fluid boils at a higher temp, and you need to stop riding the rear brake. You would be surprised at how much difference a little adjustment makes. You may not realize it but you can just be putting a little pressure on the pedal causing excess heat.
Its not from unintentionally dragging the rear brake, rather doing so deliberately.
I tend drag through loose stuff and washboard, when I ride hard on the pavement I also trail brake a lot. Its to the point that it is almost predictable. I find myself checking pedal pressure before going into a corner.