Our 9x3.50-4 inner tube is a very hot-selling item. One of the more popular sizes of scooter inner tube used on gas and electric scooters, it fits a wide variety of scooters. Also known as a 9"x3-1/2" inner tube, this is found on both recreational and mobility scooter and power chair products.
Please take a moment to look at our Compatibility tab (above on the right) to see if the 9"x3-1/2" inner tube is the right scooter inner tube for you. We stock many sizes of tubes and tires, and the 9x3.50-4 inner tube is among the most requested.