It fits just like the OEM hose, but has a flashy color to help your bike stand out just a little bit more in the pits, track, or trail - hey, we all know it helps a little bit to have style! One word you don't normally hear paired with style is "function". Yes, this vent hose is not only stylish but functional! There is a built in, one way check valve, that allows the gas tank to vent BUT does not allow dust, dirt, water, etc. into the tank. This same valve prevents anything from escaping out of the tank.