Hope this isn't confusing....

I have a set of 2003 CRF 450 R forks on my XRR. I'm using the stock XRR wheel with the Evolution Suspension adapter for the axle.
Current brakes are stock XRR rotor on the XRR wheel and stock CRF caliper on the forks.
I want to order an oversized brake kit, 280 or 270mm.
I know I need to order the CR 450 kit because the caliper spacer is specific for the CRF forks/caliper but what I need to know is if the CR 450 rotor (that comes with the kit) will bolt to the XRR wheel. I don't have a CRF wheel to measure the mounting pattern and I can't seem to find a database that lists the measurements of the rotor mounts. Any help very much appreciated.

My 04 crf setup for the motard uses 6 bolts to the hub, while on the stock xrr hub it uses 4 bolts, and they are spaced out differently., so i cant interchange the rotors of either.
Id imagine 03 is the same...

Shyte, Thanks for that, I can see that in pictures of the rotors. Guess I'll have to spring for both the CRF kit and a extra XR rotor for the wheel....