Avon Heavy-Duty Natural Rubber Motorcycle Tube The Avon Heavy-Duty Natural Rubber Motorcycle Tube offers excellent wear resistance and is characterized by high elasticity, resilience, and tensile strength. It is engineered for optimal dynamic performance while maintaining a low level of damping. Despite its strengths, it has limitations, including susceptibility to aging and reduced resistance to chemicals, oil, and ozone. Additionally, it is not ideal for high-temperature environments. Heavy-duty enthusiasts often prefer natural rubber tubes for their durability and performance attributes. Features: TR4 Valves are straight Manufactured to the highest quality as approved by all the Japanese motorcycle manufacturers Made from natural rubber