... , high airtightness motorcycle inner tube ModelweightRubber contentPulling strengthTensile strengthAir valve 2.75-17 420g15%~55%9Mpa-10Mpa380%-550%TR4 About Product:1.tension ... :2.25-17 ,2.50-17 ,2.75-17 ,2.50-18 ,3.00-18 ,3.25-18 ,2.50-14 ,2.75-18 ,3.00-17 , 3.25-17 ,3.50-10 ,2 ... .00-10 , 3.50-8 ,3.25-16 , 2.75-21 ,3.50-17 ,3.50-16 ,90/90-18 ,110/90-16 ...