Do you have to use the clutch when shifting riding a dirt bike?

In general, yes, you should use the clutch when shifting on a dirt bike. The clutch helps to disengage the engine from the transmission, which allows you to change gears smoothly and without grinding the gears. Using the clutch also helps to reduce wear on the transmission and can prevent the bike from stalling while you're shifting.

However, there are some situations in which you may not need to use the clutch when shifting. For example, if you're shifting up a gear and the engine is revving high enough, you may be able to shift without the clutch without any issues. Similarly, if you're shifting down a gear and the engine is revving low enough, you may be able to shift without the clutch without grinding the gears.

One situation where you definitely shouldn't shift without the clutch is if you're downshifting from a higher gear to a lower gear while the bike is in motion. Downshifting without the clutch can cause the rear wheel to lock up, which can lead to a loss of control of the bike.

Always use the clutch when shifting on a dirt bike unless you're in a situation where you know that it's safe to shift without it. By using the clutch properly, you can help to extend the life of your transmission and prevent accidents.