It all depends on what kind of dirt bike you have. If the clutch isn't a centrifugal clutch, (which means the clutch engages a certain acceleration speed) then usually the bike will force you to be in neutral, and hold in the clutch when starting it. If it is a centrifugal clutch, then usually you only have to be in neutral, since the driver isn't in control of the clutch.
hope this helps.
Chat with our AI personalities