So, a couple of questions.
What is the stock bolt pattern of the CX500 rotor?
What is the stock diameter of the CX500 rotor?
What is the stock offset of the CX500 rotor?
I'm looking for a rotor that will bolt to the CX500 front wheel, which is 310mm in diameter, and approx 0.75 to 1.0 offset. (I will have to measure to be sure).