I'm the only one who has done their own investigations and compared it against all other 7 port Novas and other Nova based mills?
Bore/Stroke.
Ninja: 16.27/16.79
Nova RX221: 16.26/16.80
Nova PLUS 21-3C: 16.26/16.80
RB C5: 16.22/16.80
INSANE redline.... 48k rpms!
BTW: Asked the price and seems slightly cheaper than Nova mills. Uses the small crank (14mm). I was thinking on giving retirement for mine RX21's and planning to get one, just for testing.