I was wondering if anyone has ever fitted 320mm disk to XT660R?
I would just need front break caliper extenders and a 320mm disk from XT660X?
Who makes the caliper extenders or where could I get those?
Look at this picture: http://www.the-larkins.com/Picture%20124.jpg
I would need something like that.

I also wonder about the brake lines, if they would be too tight after this mod?

I understand that the X version is a supermoto and better breaking performance is needed, but why the R version doesn't need better performance? Is there something that speaks against fitting a larger front disk to an enduro bike?