i just got a new husaberg TE300, these are the parts i put on it
GPR steering dampener
StegPegz
FMF Gnarly and Power Core2 silencer.
Flexx bars
FastwatyF6 footpegs
Heavy Duty tubes
fold down enduro mirror
and a few other things i cant remember right now.
I just picked up a 2010 FE450 a few months ago. With all of the snow I haven't been out riding yet, but I have been having fun adding accessories.
Here are a few must do items:
* Take the one-way valve out of the fuel cap vent hose.
* Take the ball out of the fuel cap.
* Fan kit.
* Header pipe guard (or you will melt your pants)
Things to consider:
* EFI map switch so you can select soft, standard, or aggressive timing.
* Radiator guards
* Rear brake disk guard.
* Swingarm guard.
* Heat reflective tape on the bottom of the tank.
* Heat wrap for the pipe.
Here are some photos of my bike with accessories in various stages of installation. Maybe that will help you decide.