SHIMANO Dura Ace crank double FC-R9100-P | Power meter without chainrings
Word has already got around among cyclists that a performance measurement system is almost indispensable for systematic training and offers numerous advantages over training control via the pulse. Due to the ever increasing demand for power measurement systems, Shimano developed the Dura-Ace FC-R9100-P, a power meter that visually fits perfectly into the current Dura-Ace 9100 top group. Despite its compact and discreet design, it has all the features you could want in a power meter. The integrated power meter hardly weighs on the scales either. Compared to the standard Dura-Ace 9100 crank, the power meter version weighs just 70 grams more.
The brain of the power meter is integrated in the spider of Shimano's current FC-R9100 aluminum crank. With its hollow, extra-wide Hollowtech-2 crank arms, it is characterized by its extremely high rigidity at the lowest weight. The performance is measured via strain gauges in both crank arms. That is why this system enables a precise step analysis. Deviations in strength between the legs can be detected after training and even while driving. With a maximum measurement deviation of +/- 2%, Shimano's power meter is on par with the top dogs on the market. The battery is integrated in the crankshaft and is charged via a small magnetic adapter. This supports the clean look of the power meter. By eliminating the USB port, the sensitive electronics are sealed and the system is thus completely waterproof. Dirt, splash water and high pressure cleaners are no problem for the power meter.
The data is sent via ANT + or Bleutooth. This makes the power meter compatible with all bike computers and smartphones that support one of these transmission protocols. Firmware updates can also be done wirelessly.
The power meter is available with crank arm lengths from 165 to 180 millimeters.
Material crank arms: aluminum
Material axle : steel
Technology crank: Hollowtech II
Measuring accuracy power meter: +/- 2%
Transmission protocol: ANT + | Bluetooth
Crank lengths: 165 mm / 170.0 mm / 172.5mm / 175.0 mm / 180 mm
bolt circle diameter diameter: 110 mm
Spider: 4-arm, asymmetrical
chain line : 43.5 mm
Q factor: 146 mm
Bottom bracket compatibility: BB-R9100 BSA / ITA or SM-BB92-41B (optional, not included)
Weights (manufacturer information):
Crank - 533g (170mm crank, without chainrings with power measurement system)
integrated power measurement system - approx. 70g
Scope of delivery:
1x crankset Dura Ace FC-R9100-P with integrated power meter
1x Shimano crank screw
1x magnet set
1x charging cable 1.5 m
1x magnetic tool
1x Shimano TL-FC40 crank tool
4x chainring bolts
without bottom bracket