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Shimano Ultegra Power Meter FC-R8100-P Crankset
Shimano Ultegra Power Meter FC-R8100-P Crankset
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Shimano Ultegra Power Meter FC-R8100-P Crankset
Shimano Ultegra Power Meter FC-R8100-P Crankset

Ultegra Power Meter FC-R8100-P Crankset

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Backorder: This item is currently not in stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Precision Training and Dura-Ace Trickle-Down Functionality in an Ultegra Package

Offering all the precision and functionality of the DURA-ACE power meter, the Ultegra FC-R8100-P power meter crankset comes in a more budget-conscious package.

Scientific training requires accurate measurement and user-friendliness, and the new Ultegra R8100 power meter has both. Its dual-sided measurement is accurate within 1.5% and zero offset calibration is a quick and easy process. Perhaps most importantly, its long battery life, easy recharge, and ANT+ and Bluetooth LE connectivity makes using and recording your workouts easier than ever.

The R8100 features an integrated, waterproof, and rechargeable LI-ion battery with up to 300+ hours of ride time depending on Bluetooth mode and settings. The unit's software automatically compensates for real time temperature changes.


  • Weight: 769g (52-36t) 758g (50-34t)
  • 2x12 speed double
  • Shimano Hollowglide and Hollowtech II technologies
  • Chainring combination: 52-36T 50-34T
  • Includes EW-EC300 battery-charge cable
  • ANT+ and Bluetooth connectivity
  • LI-ion battery
  • Precision data collection
  • Active temperature compensation
  • Battery life: up to 300+ hours
  • Left and right side power measurement
  • Intended use: road
  • Available in 170 to 175mm crankarm lengths w/ either 50-34t or 52-36t ringsets
  • Available in 160 to 175mm lengths as a standalone crank arm option, without rings

    • 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.

    172.5mm (50-34T)

    Mfg PartNum: IFCR8100PDX04A 

    160mm (W/O Chainrings)

    Mfg PartNum: IFCR8100PMXXA 

    165mm (W/O Chainrings)

    Mfg PartNum: IFCR8100PAXXA 

    170mm (W/O Chainrings)

    Mfg PartNum: IFCR8100PCXXA 

    172.5mm (W/O Chainrings)

    Mfg PartNum: IFCR8100PDXXA 

    175mm (W/O Chainrings)

    Mfg PartNum: IFCR8100PEXXA