... very popular around the world.2 Product range: Various motorcycle butyl and natural rubber inner tubes are available. ... 17, 3.50-10, 3.50-16, 4.00-8, 4.10-18, 70/90-14, 80/90-17, ... inner tube, electric bike inner tube and motorcycle inner tube1.Produce Motorcycle tyre,motorcycle butyl inner tube and natural inner tube ... Sizes:250-10, 275-10, 300-10, 300-8, 350-8, 400-8, 225-14, 275-14, 300-14, 225-16 ...