But for sprockets, you've got to be more careful. A Yamaha 500cc dirt bike sprocket does not fit a Suzuki 500cc dirt bike. True, you may find some exceptions, where you can interchange sprockets accross bike brands. But that is pretty rare. And indeed, there is no point. Just order the exact sprcoket your bike needs!

Generally, most front sprockets for bikes have 14 to 18 teeth.

Th rear sprocket often stays between 34 and 50 teeth.

Dirt bike sprockets are not one-size-fits-all. You should get the correct size for your bike brand and model. In practice, the size of the chain that runs around the sprockets dictates the sprocket size to use