If you don't want to spend any real money, you should probably, at the very least, change your fork oil. Otherwise, there's not much you can do except set your preload on both your forks and shock.
If you do decide to spend some dough, for the front end you will need springs that are sprung for your weight, and emulators if you choose. For the rear, either a gsxr shock (cheaper way) or an aftermarket one which will run you about at least $700.
If you do decide to spend some dough, for the front end you will need springs that are sprung for your weight, and emulators if you choose. For the rear, either a gsxr shock (cheaper way) or an aftermarket one which will run you about at least $700.