Item Type: Motorcycle Inner Tube_x000D_ Material: Butyl Rubber_x000D_ Product Color: As Pictures Shown _x000D_ Product Weight: Approx. 469g / 16.5oz 1Butyl rubber inner tube has excellent air tightness, good resistance to cold and heat and aging resistance. 2It can be used normally for more than 128 days after inflating, and it is the most commonly used inner tube material. 3The butyl rubber tire inner tube can absorb the vibration of uneven roads, thus ensuring comfortable and safe driving. 4Simple installation, and the old tire inner tube can be easily replaced within a few minutes, which is time?saving and efficient. 5With stable performance and high reliability, it widly fit for 2.75?17inch motorcycle tires.1 x MotorcycleInnerTube 1. Confirm whether the specification of the inner tube is consistent with that of the outer tube. When installing the inner tube into the outer tire, please carefully check the inner space of the outer tire for sand, cracks or other unfavorable factors._x000D_ 2. When installing the outer tires and inner tubes on the steel rims, please check the steel rims in detail to make sure that there are no bad factors on the steel rims, no deformation, bending, or debris. Please use lining tape to cover loose and rough banner heads or other sharp surfaces that will damage the inner and outer tires._x000D_ _x000D_ 3. Please tighten the nut carefully with a wrench. Never use some sharp tools such as a screwdriver to tighten the nut, as they will damage the inner tube or tire bead. When tires are used for high?speed driving, RIMLOCK is recommended for increased safety._x000D_ _x000D_ 4. When installing the inner and outer tires on the steel rims, please be very careful to confirm that it must be done: the valve core is correctly locked on the steel rims, and the steel rims are exposed for inflating, and the inner tube is not clamped between the tires and the steel rims. between._x000D_ _x000D_ 5. After the inner and outer tires have been installed on the rim, inflate the inner tube with 10 PSI, then stop pumping, and check whether the inner and outer tires are correctly locked on the rim. Then it can be inflated according to the air pressure recommended by the manufacturer, marked on the sidewall of the tire. The rim line on the tire must be exposed outside the steel ring to be visible._x000D_ _x000D_ 6. Don't pump up too full or too little, as this will cause the valve to separate from the inner tube and cause an accident. Please check whether the air pressure is at a normal level. Please check the valve to prevent air leakage and lock the valve core tightly.