As far as i know the WSBK website does not have a package like motogp has to watch their races. If you sign up for their fans 'energy zone' you can watch race highlights. Maybe with the dorna take over there might be something similar to motogp in the future?
I just watched an 'On The Throttle' video that took a tour of the yosh usa factory and there was a segment about how they went back and redesigned their exhaust for a 06+ R6 and managed to save a good chunk of db's. maybe look and see what it is now??