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Improved design and material over the original for greater strength and stiffness
these extensions also feature a universal 22
The stems have exceeded 2x the fatigue and static overload ISO requirements for racing bicycle steering components
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Izumi Super Toughness Kai Chain Tools Improved design and material overSpecifically designed for the Tokyo Olympics, this chain features a very slick, highly functional new coating on the plates, bushings and rollers which is said to reduce resistance and drag by 10% compared to the traditional Model V Super Toughness when used in combination with a high performance lubricant. This new technology also increases hardness, durability and corrosion resistance. Visit the our handy IZUMI Chain Guide for more information.