Bridgestone Inner Tube for 100/90-19 Tire 548618 Tire tubes for street and off-road applications For specific tires/applications NOTE - SAFETY WARNING: For information on tire care, safety, maintenance, mounting, manufacturers warranty and other information consult tire manufacturers publication(s) and/or website(s) for complete tire information. The tires used for your application must have a load index and speed rating equal to or greater than the tires fitted as original equipment.