Shimano 7800 dura ace double chainset hollowtech ii 170 mm 53 42t
Precision engineering and highly advanced features make the dura ace chainset the choice for road racing39s elite ridershollowtech ii 10 speed dura ace double chainset offers the optimum balance of lightweight and rigidityintegrated bottom bracket design gives wider bearing placement plus larger axle for increased stiffness and efficiencyminimal bearing interface gives superbly smooth rolling
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