Ujjdwiurgh 2.75/3.00-21 Inner Tube Fit Off Road Motorcycle with 21Inch Tires, 80/100-21 Inner Tube Replacement with TR4 Valve Stem

COMPATIBILITY: 2.75/3.00-21 Inner Tube Fits Motorcycle with 21inch Tires, great 80/100-21 Replacement Inner Tube With TR4 Straight Valve Stem : 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 GREAT PERFORMANCE: The inner tubes are double thick, more . Improved version thicker rubber tubes which are tear-, scratch- and in use 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