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Shimano Dura-Ace Power Meter FC-R9100-P Crankarms

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The Shimano Dura-Ace FC-R9100-P Crankarms allows for precise, reliable real-time power measurement and analysis. Featuring Hollowtech II crank construction, these expertly engineered crankarms boast stiffness gains and weight losses over previous Dura Ace crank iterations, and it's ready for today's modern race geometries with a re-positioned inner chainring to improve performance with 135 mm rear-spacing frames and short chainstays.

The real stand-out of feature of this crankset is its fully-sealed integrated crank-based power measurement system. Offering accurate multi-position measurement, the R9100-P is the essential performance tool for every cyclist who wants to achieve their true potential. Featuring an internal battery, the power meter recharges via a magnetic attachment for quick, easy charging.

Available in multiple crank lengths and gearing options. Compatible with Shimano BB-R9100 and BB-R9100-PB bottom brackets.


  • Accurate real time data.
  • Compatible with 3rd party displays.
  • Bluetooth / ANT technology.
  • Hollowtech II construction.
  • Hollowglide chain.
  • 11-speed compatible.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

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Reviewed 11/1/2018
by Jess
Cycling Enthusiast
Houston, TX
Value Rating
Overall Rating
Great Powermeter with Shimano quality.

I own five powermeters now...The first three were SRMs of various generations. They were all fine...until the battery needs to be replaced which even if you overnight the crankset to SRM will take them 2 weeks to change (why???). My last two powermeters have been Shimano and they're great. A little slower to register jumps in power, but great quality and best of all they're rechargeable!

The customer service at SRM was so bad (slow, unconcerned that you're without a bike while they drag their feet) that the last time I sent one in, I sent it in the Shimano box as a way of letting them know they had some competition. The Shimano is less than half the price too. I couldn't be happier!

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