Features1Rubber Material: Made of high quality rubber material, the internal structure is stable, and has strong flexibility, which can fully meet the international standard air pressure. 2Longer Service Life: Off road motorcycle inner tube has higher safety performance and longer service life than ordinary inner tubes, more durable. 3Shock Absorption: The 2.75/3.0021 inner tube can absorb the shock of bumpy roads to adds comfort to your riding and guarantee your safety. 4Applicable Models: The 2.75/3.0021 inner tube has a straight valve stem and is ly suitable for motorcycle with 21 inner tubes. 5Replaceable Inner Tube: No need to buy a new tire when you have a flat, simply replace the damaged inner tube and you'll be back up and running.SpecificationItem Type:2.75/3.00-21 Inner TubeMaterial: RubberColor: As Pictures ShownWeight: Approx. 542g/19.1ozValve: Straight Valve StemPackage List1 x2.75/3.00-21 Inner Tube