The teeth allow the belt to be more flexible, and smoother and faster variation. If you have no speed upgrades, just use a non toothed belt. This will work for both race setups.
BX belts are wider than AX belts mostly for a special variator or higher variation.
Works with Honda mopeds. Hobbit, Camino, PA50, PA 50 II.
This is our house brand belt. Straight from the factory to you. This allows us to offer them at a lower price.