Employing a newly developed high-strength butyl rubber "Air Flex Lite Butyl".
Racing tubes achieves the best balance of durability and light.
Conventional tubing 2.1 x elasticity and high vibration absorption and reduce riding stress by high surface conformability.
Mean weight reduction decreases the durability and puncture resistance.
Best balance of lightness and sturdiness.
RAIR asked what it is.
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