Bike Modifications

Hi guys,

I'm a beginner buying a bike next week.

Just need some input on what modifications i should make to a bike in the near future. I understand car mods, but i don't know the performance difference with bikes and what to expect.

Any recommendations on what mods i should do and performance it will achieve. Im riding a 250 zx2r.


p.s. i really want a great exhaust note too (doesn't everyone)

Thanks