calliper

So I'm fitting 17s to the berg that came with a 320mm rotor. I'm looking for a 310mm rotor to match the Beringer caliper that mounts direct to the forks. The wheels are from a aprilla pegaso I think and I can't find a 310mm rotor that will match the wheels. The measurements I need are...

I have a fx450 2011 and want to put supermoto wheels on it . I have wheels but I'm having trouble with a bracket for a 320 disc. I have tried a talon bracket tb02 but it won't fit and they are not available any more. I have also tried a braking bracket pow94 still won't fit the caliper ,it was...