The Shimano Dura-Ace Dual Sided FC-R9100-P Power Meter HollowTech II Road Crankset 11-Speed is Shimanos first pedaling power measurement product and also the first crank-integrated power meter on the market. It is built to provide riders with one of the most accurate systems of power measurement, utilizing technology from bikefitting.com, a Shimano-owned company specializing in highly advanced bike fitting and bike measuring instruments.
The power meter allows integration and easy installation (pairing) with third party display units to enable the most sophisticated and accurate level of performance measurement and anatomic analysis available today. Not only can the pure output of watts be measured, left and right legs can be measured separately, as well as cadence, giving you the truest measure of performance, isolated from external factors such as gradient, road surface and wind.
SPECIFICATIONS Intended Use: Road,Triathlon Series: Dura Ace R9100 Speeds: 2x11 Chainrings: 34-50, 36-52, 39-53 BCD: 110mm 4-Arm Crank arm length: 170 mm, 172.5 mm, 175 mm Chain line: 43.5mm Q-factor: 146mm Axle diameter: 24mm Compatible housing width (for BSA Bottom bracket: (sold separately) 68mm bottom bracket (recommended): BB-R9100 or SM-BB92-41B Pressfit Hollowtech II Recommended Chain (rec.): HG-EV 11-speed, HG-X11 (eg CN-HG901-11 ) Weight: 696 g (53-39T), 695 g (52-36T), 685 g (50-34T)
FEATURES Integrated design Water-resistant and designed for use in rainy weather Integrated, rechargeable battery (charging time 2.5 h) Fast system start and direct response Overall performance and separate measurement of left and right leg (strain gauges in the crank arms) Easy manual zeroing by pressing a button Firmware updates via E-Tube project Simple chainring change, as strain gauges in the crank arms and power meter integrated in the Spider - charging via magnetic adapter communication with ANT + or Bluetooth LE-enabled terminals Anodized crank arms and chainrings Chainring bolts anodized aluminum
TECH SPECS: Crankset with Power Measurement on both sides Measurement accuracy: +/- 2% Measurement point: Crank arm Equipment : Lithium-ion battery, integrated Operating time: min. 300 h Measured values: Cadence, Power, Right-left balance, Tread, Torque Transmission protocol : ANT +, Bluetooth® LE Material crank arms: aluminum Material chainrings: aluminum, carbon (CFRP) / Aluminum Material Axis: steel
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