... motorcycle inner tube ModelweightRubber contentPulling strengthTensile strengthAir valve 2.75-17 420g15%~55%9Mpa-10Mpa380%-550%TR4 About ... size are available :Tyre and inner tube :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 ...