Crank arms Shimano DURA-ACE FC-R9100P Power Meter 172.5MM 2x11-speed

High end SHIMANO DURA-ACE FC-R9700-P HOLLOWTECH II crank arms with power meter for 2x11-speed drivetrainChainring and bottom bracket are not included!Reliable electric systemOwn developed strain gaugeSoftware compensate automaticallyPossible to start quicklyWaterproof in all conditionsDirect responseBluetooth®LE and ANT+Wireless firmware update systemIntegrated rechargeable batteryEasily change chainrings without affecting powerEnough clearance with our direct mount brake caliperIntegrated designActive temperature compensationBattery: rechargeable Li-ion battery300+ hours of ride timeQuick response and operation without stressEasy maintenanceClearance with frameAccurate data collectionWeight: 562 gWith power meter Chemistry: Li-ion Rated voltage: 3.7 V Rated capacity: 0.66 Ah Rated capacity: 2.442 WhHOLLOWTECH IICompatible chain HG-EV 11-speed/HG-X11Crank Arm Length: 172.5mmGear arms: 4HOLLOWGLIDEBCD (Bolt circle diameter): 110 mmThreaded BB Shell Width: 68mm, 73mm, 70mmIncludes crank fixing boltQ-factor: 146 mmChainline: 43.5 mmAnodized aluminium cranksCompatible chainrings:1VP34000 Chainring 34T-MS for 50-34TY1VP36000 Chainring 36T-MT for 52-36TY1VP39000 Chainring 39T-MW for 53-39TY1VP98010 Chainring 50T-MS for 50-34TY1VP98020 Chainring 52T-MT for 52-36TY1VP98030 Chainring 53T-MW for 53-39THOLLOWTECH II - Providing the best balance of stiffness, strength, weight and rotating performance The concept of HOLLOWTECH II technology is focused on producing a superior crankset which will maximize a rider’s power transfer. The rigidity of the crankset ensures pedaling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more. Naturally, SHIMANO strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. HOLLOWTECH technology is an ultra-lightweight hollow crankarm created by SHIMANO with the company’s own proprietary forging technology that also maintains rigidity. The addition of HOLLOWTECH II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket (sold separately) bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer. The HOLLOWTECH II crankset has been developed by pursuing the optimum balance of stiffness and rotating performance in a lightweight and beautiful crankset design. Moreover, HOLLOWTECH II crankset has a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.HOLLOWGLIDE (only on 46x36T): High rigidity hollow structure cuts down on weight yet maintains strength. Better power transfer and quicker and more precise front shiftingHG-X11 - directional chain realize more smoother shifts and greater overall performance. Right and left sides are optimized for front and rear shifting respectively.