When a dirt bike is in neutral, it means that the transmission is disengaged, and the bike is not in any gear. In this state, the bike is not connected to the engine power and can be easily pushed forward or backward. This can be useful when you need to maneuver the bike in tight spaces or push it around without starting the engine. Without being in gear, the bike won't move forward even if you twist the throttle or release the clutch. However, it's important to note that being in neutral doesn't mean the engine is turned off. The engine is still running, but the power is not being transmitted to the wheels.