I want to upgrade my suspension, a more "aggresive" handle bars and maybe a new pipe? What should I get? Where can I buy? and where can i have them install? or is it better for me to install it myself?

ixil, jardine,remus, laser and anyhting else for exhasut. sm bars and the great search button for the rest 

I just got the Race Tech springs put in front, they're awesome.

SM2 bars, they're friggin sweet.

Don't bother with those pipes, Makenzine is making a high-mount that is WAYYYY better and as cheap or cheaper.

Do the rear shock too.