There seems to be an inner ring in the exhaust end and in one pic it looks segmented. Also the top pic you can clearly see a actuator with two control cables that appears to be attached to the exhaust.
Will be interesting to see how it works if it is.
Happiness is not a destination. It is a way of life.
I don't think it's actually designed to do what it says in that article , I think its more likely to be something akin to the exup on the R1, but I'm not an engineer so I could be completely wrong .
I was dubious reading it that you would get that much reaction force from a exhaust to make a noticeable difference, but guess the proof is in the pudding!
I reckon you are right Jack.
Happiness is not a destination. It is a way of life.