... , high airtightness motorcycle inner tube ModelweightRubber contentPulling strengthTensile strengthAir valve3.00-17 500g15%~55%9Mpa-10Mpa380%-550%TR4 About Product:1.tension ... .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 ,2.25-14, 3.00-10 ,4.00-10 , 4.00-12 ,4.00-8 ,3.00-10 , 3 ...