... -resisting, aging resistance 5.Highly Tear Resistant, high airtightness motorcycle inner tube ModelweightRubber contentPulling strengthTensile strengthAir valve3.00-8 300g15%~55%9Mpa-10Mpa380 ... ,4.50-12 , 3.00-8 ,90/90-18 ,3.00-12 , 16x2.125 ,3.50-5,16x6.50-8 ,13x5.00-6 , 12 1/2 ... x 2 1/2 , 315x55 , 110/50-6.5 ,2.50-8 ,12 ...