Kinds of dirt bikes?

Honda sells crf, cr and used to sell xr until that became xr, Honda sell 50cc bikes to 650cc

Kawisaki sell 50cc 65cc ect not sure the types though im more 4 hondas

KTM is a less common brand

Yamaha is pretty common they all sell about the same sizes

Suziki is also not as common were i live but i know pro racers ride them in tournaments

That about all i can think of, is that wat u asked?:)