Quarq dfour power meter crankset gxp 1775mm 110 bcd
Dzero innovation for shimano bikes the dfour power meter is a bolt on upgrade for shimanos 11 speed dura ace 9000 ultegra 6800 and 105 5800 drivetrains features bluetooth low energy technology and ant wireless data transfer axcad no magnet 10k temperature compensation battery cr2032 200 hour battery life change without tools omnical swap chainrings without affecting accuracy 2 year warranty ipx7 waterproof rating accuracy within 15 measuring both legs com