I have setup for FZ5 in which i go 230-240kmh in 3rd gear. I have setup for FZR in which i go 250-260kmh in 2nd gear. That's not about power, it can be done, you just have to change the gear ratios. Anyways I'm gonna check the replay and tell you if it's speedhack or not.
Edit: I checked it. Not hack, as i supposed. Gear ratios doesn't have anything to do with speedhacks.