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Osymetric Dura-Ace FC-9000/Ultegra FC-6800 chainring set 110mm noir

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  • O.SYMETRIC chainring kit 4-arm DURA-ACE FC-9000 & ULTEGRA FC-6800 & 105 FC-5800

    oval shape for optimized movement
    Material: Aluminum

    Advantages
    • the death point is overcome more easily
    • a higher gear ratio is easier to drive
    • higher efficiency, i.e. reduced heart rate at the same power input
    • chronic knee pressure is reduced
    • the muscles work more easily, as does the cardiovascular system
    • higher speed uphill (approx. 5 seconds time gain per kilometer)
    • higher speed on level ground (approx. 3 seconds time gain per kilometer)
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