Originally Posted by ViperZ
You think a 200mm rotor would stress a XC fork....? Do DH forks have thicker mounting bosses?
It's related to the axel. You are not supposed to use front rotors 200mm or larger without a 20mm front hub.
With hydraulic brakes, 180mm is pretty grabby already for non-DH use.
And I have to agree that a larger rotor in front makes sense both functionally and aesthetically. Rotors larger than 160mm in the back have few advantages other than heat dissapation on long descents.