That body kit is aftermarket Euro stuff made or bought by Pegasus Racing. I am not a fan, I think it looks like ass, althought the forced induction is a good idea. The rider for Pegasus is a freaking giant for a racer and he didn't like the stock 1190RR bodywork (which is gorgeous btw) because it was too small for him
The exhaust is the Buell racing full system. One of the differences from the stock system is they moved the two into one from the port to several inches away. I don't know why, but obviously it improves performance or else Buell wouldn't have done it.