SKU: 16577549244

Shimano FC-R8100 Ultegra 12-Speed Crankset w/Inpeak Powercrank-E (Take-Off)

Sale price$259.20 Regular price$288.00
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Shimano FC-R8100 Ultegra 12-Speed Crankset w/Inpeak Powercrank-E (Take-Off)The INPEAK POWERCRANK E Shimano R8100 Power Meter Crankset is the rechargeable version of the POWERCRANK. It measures the power generated by your left leg and doubles it to determine your total watts. Data transmits via ANT+ or Bluetooth Smart, ensuring seamless connectivity with your preferred head unit or training app. Designed in Poland, INPEAK engineered the POWERCRANK E sensor to handle whatever the Polish climate threw their way. As a result,

The INPEAK POWERCRANK-E Shimano R8100 Power Meter Crankset is the rechargeable version of the POWERCRANK. It measures the power generated by your left leg and doubles it to determine your total watts. Data transmits via ANT+ or Bluetooth Smart, ensuring seamless connectivity with your preferred head unit or training app.

Designed in Poland, INPEAK engineered the POWERCRANK-E sensor to handle whatever the Polish climate threw their way. As a result, the INPEAK POWERCRANK-E is IP67-rated for water and dust resistance. Alongside water and dust protection, it features active temperature compensation from 23°F to 122°F. While the INPEAK can withstand any adventure, it is one of the lightest options available and adds only 10 grams to the crank arm. With USB charging there is no more searching for a spare battery, just charge and ride.

Product Details:

  • Compact Design: Only 6 mm thick and 10 grams means the sensor fits most frames and adds minimal weight
  • Data Multiple Ways: ANT+ and Bluetooth Smart connects to head units such as a
    Garmin Edge and a variety of training apps such as Zwift Power Measurement
  • This INPEAK power meter measures left leg power and doubles the value to account for both legs (assumes both legs are generating the same force)
  • Power range: 0 – 2000 W
  • Cadence range: 20 – 200 RPM
  • Measurement accuracy: ± 2%
  • Weight: serial crank weight + 10g [L]
  • Internal battery: LiPo rechargeable cell
  • Battery life: up to 90 hours
  • USB charger required: 5VDC, 1000mA (1A) [not included]
  • Level of water resistance: IP67
  • Working temperature: -5°C to +50°C
  • Battery charging temperature: +5°C to +40°C
  • Storage temperature: -20°C to +50°C

Transmitted data:

  • Power [W]
  • Cadence [RPM]
  • Torque effectiveness (TE)[%]
  • Pedal smoothness (PS) [%]

FC-R8100 Crank Features

  • Hollowtech 2
  • Weight: 700g,711g
  • Chain: CN-M8100
  • Threaded BB Shell Width: 68/70
  • Chain Ring Combination: 52-36
  • Crank Arm Length: 172.5

*Does not come with CG or BB Parts.

ITEM NUMBER: FC-R8100

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 16577549244

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Based on 22 reviews
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Lynn M
Massapequa, US
★★★★★ 3
Disappointed.
Color: Blue, Size: Large, Color: Blue, Size: Large
This sweater is so comfortable and very soft. It fits well in a flattering, oversized way. But after one wash it is pilled everywhere which makes it look old and shabby. It’s at a price point where I feel compelled to return it.
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Reviewed in the United States on January 10, 2026
T
Verified Purchase
TripletMama Heather
Los Angeles, US
★★★★★ 5
Perfect for casual wear and dressy style
Color: Dark Green, Size: Small
This sweater is soooo soft and the color is so rich. The fit of it is perfect, not too tight and not too baggy, just right and I used the size guide to pick my size. Just for reference, I am 5'3" and 130lbs, 38C bust. It's well made and washes great. I chose to hang dry mine as I typically don't put any of my sweaters in the dryer to dry, just to fluff them. I have this one in two colors, the green and the tan/beige and I would say they are both a true representative of the color shown.
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Reviewed in the United States on November 15, 2025
M
Verified Purchase
MMF
Cuba, US
★★★★★ 5
Love the long sleeves!!!
Color: White, Size: Small
Love it! I'm 5' 11" tall and I purchased this according to reviews. Several people commented on the length of the sleeves. I have a hard time finding sleeves long enough if it's not " tall" sized. It was perfect for me. If this washes nice I'm going to consider purchasing more in other colors. I ordered the white and just love the long ribbed cuffs with the line of buttons. Very soft.
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Reviewed in the United States on May 1, 2026
C
Verified Purchase
Cindee
Dallas, US
★★★★★ 4
Nice cozy sweater, but handwashing is recommended
Color: Beige, Size: Medium
Soft and cozy, but does not wash well. Goes with everything. This sweater fits well and looks great. I received lots of compliments while wearing it.
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Reviewed in the United States on April 23, 2026
H
Verified Purchase
Hillary K
Houston, US
★★★★★ 5
Great sweater for winters in the Midwest
Color: Black, Size: X-Large
Love this sweater! I went back and got another color! The fit is true to size and very comfy. The button detail on the sleeves just adds a little pizazz. The weight of the sweater is perfect for winters in the Midwest.
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Reviewed in the United States on May 30, 2026

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