Originally Posted by dirtdadx
That looks like it is for an F800GS. The rear rotors on the F650GS are different as far as I know.
Nope. Rear is the same. The front is different.
I've actually got an f800gs rear hub on my 650 twin and used my existing rear disc. If you want 100% confirmation check the microfiche on Max BMW website or Bike Bandit. The part numbers are the same for both bikes.