【COMPATIBILITY】This 2 Pcs 2.75/3.00-21” Inner Tubes Fit Motorcycle with 21'' Tires, great 80/100-21, 90/80-21, 90/90-21 Replacement Inner Tube with TR4 Straight Valve Stem
【HEAVY DUTY】The inner tubes are double thick, more durable. Improved version thicker rubber tubes which are tear-resistant, scratch-resistant and durable in use
【SAFETY FIRST】We designed this inner tube to be explosion proof. When and if punctured, it immediately creates an airtight seal to prevent damage, destruction and injury to the rider
【EASY TO INSTALL】The replacement inner tire is extremely convenient and simple to install and detach. Please check the position of the valve, and make sure you install them in the right direction
【AFTER-SALES SERVICE】Before installing, check to see if the inner tubes are completely sealed by putting them in water, if there are any bubbles, they are already damaged. Please contact us, we will provide 100% refund or Free replacement to you soon
