Installing Avid BB7 Calipers in Razor MX650 Dirt Rocket

Avid BB7 is best mechanical disk brakes I ever use.
So I decided to install it on my new Razor MX 650.
Unfortunately, rotors are incompatible.
But calipers was successful installed.

Soundtracks - by "Silent Partner" from Youtube public domain collection -    / audiolibrary  
(Music licensing - Youtube public domain)
Tracks:
"Back and Forth" - https://www.youtube.com/audiolibrary_...
"Clear Eyes" - https://www.youtube.com/audiolibrary_...
"Cloud Patterns" - https://www.youtube.com/audiolibrary_...
"Dinner For One" - https://www.youtube.com/audiolibrary_...
"Don't Change A Thing" - https://www.youtube.com/audiolibrary_...
"Energetic" - https://www.youtube.com/audiolibrary_...
"Lay It Down" - https://www.youtube.com/audiolibrary_...
"On The Table" - https://www.youtube.com/audiolibrary_...
"Tied Up" - https://www.youtube.com/audiolibrary_...