slipper clutch for at least the fox. you would thought it being a new race car, they would employ this technology. hell, some of the road legal thou cc bikes have slippers.
For those who don't know, a slipper clutch is a type of clutch that automatically slips a bit under compression braking to help stabilize the vehicle. I've only ever heard of this being on bikes to limit rear wheel hop under braking while downshifting and is available on some (maybe almost all now) 1000cc and 600cc sportbikes. MotoGP has been using the technology for some time now.