Honda Spree and Elite 50 Forums

what does the hose going from the airbox to the back of the belt cover do?, is it necessary or can i put a different air filter on it?

pls post pic, but if I'm thinking right are you talking about the hose that comes from the back (rather inside) of the final reduction case to the rear wheel well/cover thing? If so, that is a vent (so as the oil heats up it doesn't explode or leak from the pressure).