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Shimano FC-R9100 Dura-Ace HollowTech II Road Chainset

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  • Product description

    The HollowTech II 11-speed Dura-Ace chainset offers the optimum balance of light weight and rigidity, making it the global choice for road racing's elite riders

    Hollow outer chainring, giving vast improvements in rigidity while shaving off the grams

    The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load

    These industry leading HollowTech II 4 arm cold forged hollow crank arms have been evolved to increase rigidity,  and improve strength while remaining as light as possible

    The teeth have been developed to work only in conjunction with the 11-speed chains for improved contact providing more efficiency and improved power transfer

    There is a wide range of chainring ratios and crank arm lengths available enabling customisation for all riders and racing disciplines

    HollowTech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency

    Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling and increased durability

    Weight 609 grams (50-34T)
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