Welcome to the forum, AceBit.
I believe it's not. When the N400 came out and several people were considering the upgrade, everyone started to look what accessories were interchangeable between the two bikes, and it looks like almost none are.
As far as I know, you can only swap the brake and clutch levers, and probably the swing arm sliders or spools.
No pipe, shock, wheels, PCV, air filter, case covers, rear sets, clip ons, forks. Everything is different.
I'm not sure about the front brake components, but I think is not swappable either.