INPEAK Powercrank-E TWIN2 Ultegra FC-R8100 Road Bike Power Meter

Keen to take your cycling training to the next level with precise data from both legs? The INPEAK Powercrank-E TWIN2 Ultegra FC-R8100 is exactly what you’re looking for! This power meter is discreetly integrated into an original Shimano Ultegra 12-speed crankset and measures your power output on both sides, so you can easily identify any left-right imbalance in your pedalling and train specifically to address it.

This new E version makes things even easier: As the battery is built-in and rechargeable, you no longer need to replace flat button cells. Plus, whether you’re training specifically for your next race or simply want to view your power data during a ride on Zwift, this Powercrank-E communicates seamlessly with your favourite cycle computer, sports watch or smartphone via ANT+ or Bluetooth Low Energy.

TWiN2 dual-sided measurement
The sensors on both the left and right crank arms give you real-time insight into your pedalling balance (L/R) and your pedalling smoothness. This allows you to work on a much more efficient pedalling stroke, which will save a huge amount of energy on long rides.

Rechargeable battery
The hassle of flat batteries just before a ride is now a thing of the past; you can charge the built-in Li-Po battery using the handy magnetic cable in just 2 hours. A full battery gives you around 90 hours of carefree cycling time.

Automatic Temperature Compensation (ATC)
Temperature fluctuations during a ride normally affect power measurements but INPEAK's ATC technology automatically corrects for this. Thus, a cold start or hot finish will not result in distorted wattage readings on your display.

Compatible with:
• All road bikes and gravel bikes with a Shimano Hollowtech II bottom bracket (24 mm axle diameter).
• Shimano 12-speed road groupsets such as Ultegra R8100, Dura-Ace R9200 and 105 R7100.
• Most modern cycle computers and heart rate monitors (Garmin, Wahoo, Mio, etc.) thanks to ANT+ and Bluetooth connectivity.

Not compatible with:
• Older 11-speed or 10-speed Shimano drivetrains, as the chainrings are designed specifically for 12-speed chains.
• Bikes with very little clearance between the left crank arm and the horizontal chainstay. The power meter pod needs a certain clearance to avoid rubbing against the bike frame.

In the box:
• Shimano Ultegra FC-R8100 crankset with integrated INPEAK dual-sided power meter
• Magnetic USB charging cable
• INPEAK sticker set for protection or decoration
• Quick Start Guide
• Device data sheet with your unique PIN code

Not included / still required:
• USB power adapter (5V, 1A) to plug the cable into
• Shimano crank spanner (such as the TL-FC16) for installation
• Bottom bracket (if your current bottom bracket needs replacing)
• Pedals

Fitting this complete crankset is easy to do yourself if you have the right tools to hand. Remove your old crankset using an Allen key and a special Shimano tool for the locknut. When fitting the new INPEAK crankset, make sure you always tighten the Allen bolts on the left-hand crank arm using a torque wrench (usually 12 to 14 Nm – check the manual to be sure). This will prevent damage to the axle and ensure you get the most accurate power measurement.

If you live in the Netherlands and need help, or would rather have one of our mechanics install your new INPEAK power meter crankset for you, you can schedule an appointment with one of our workshops.

• We recommend carrying out a quick manual zero-offset calibration using your cycle computer before each ride. To be sure your data is 100% accurate, position your pedals vertically, unclip your cycling shoes, and check that there is no pressure on the cranks.
• Download the INPEAK Manager App onto your smartphone. The app makes it easy to keep the firmware up to date and allows you to check battery status at the touch of a button.
• Keep the magnetic charging connector clean and dry. You can certainly rinse the crank with water after a muddy ride, but should never spray it directly with a high-pressure cleaner!