The rotor that i'm talking about is the flywheel, it has as a code(i think it's 9905).
No i'm not from holland sadly, i'm from Portugal.
I'm thinking about the Pro Race exhaust because someone here on the forum tell us that it was the most powerfull exhaust on the 2fast kit that he tested, even better than dpr(+1hp)... but who knows, maybe i will contact roost to make one for me too.
by the way, how much it cost roost pipe?
cheers