I have a Canyon Ultimate CF SLX Disc and I'm in the process of upgrading to Ultegra R8000 (anyone want to buy Ultegra 6800 crankset as well as front and rear mech?! - once my new shifters arrive anyway).
Shimano recommends 140mm rotors, as mentioned in road.cc's review http://road.cc/content/review/217032-canyon-aeroad-cf-slx-disc-80-di2
Why do I want to switch to smaller, less powerful rotors? It's quite simple, my Canyon is essentially my dream bike, so the aesthetics are very important and I think 140mm rotors look much better.
I weigh 67kg and I don't do mountain descents, so I highly doubt heat build up or brake fade is going to be an issue. I also don't ride my Canyon in poor conditions (mud/rain), so I'm not overly concerned about braking power.
I'm new to flat mount disc brakes... I assume it is as simple as (changing the rotors - obviously) removing the rear 160mm spacer and flipping the front spacer to the 140 position?
Just want to make sure I'm not missing something (like frame compatibility).