... airtightness motorcycle inner tube ModelweightRubber contentPulling strengthTensile strengthAir valve3.00-8 300g15%~55%9Mpa-10Mpa380%-550%TR87 About Product:1. ... tension strength between 8-11mpa is available2.elongtion rate:500%,530%,560%,600%, ... -23 , 3.00-25 ,4.50-12 , 3.00-8 ,90/90-18 ,3.00-12 , 16x2.125 ,3. ... ,3.50-4 ,3.00-4 , and so on durable motorcycle inner tube