Power Meter Crankset
The DURA-ACE FC-R9100-P Dual Sided power meter crankset is Shimano's very first Power Meter.
It comes with a battery integrated and the left and right side of the power meter are connected using a wire that runs through the Hollowtech II spindle,
The claimed battery life is 300 hours of ride time and its stated accuracy is about 2%. As of February 2019 it supports both BluetoothLE and ANT.
Unlike most power meters nowadays it uses a magnet to determine your cadence. The magnet itself sticks onto the frame using an adhesive cover, of which you get two with the power meter - black and white.
Is your bike orange, green, pink or any colour other than black or white? Then you'll probably want to paint the power meter magnet cover to make it less obvious.
If you're looking for a review on the FC-R9100-P power meter then you've probably already found DC Rainmaker's page on the unit. It covers just about everything, from installation to firmware update and an extensive power data / accuracy analysis.
If you're more into video content, have a look at the video below by GPLama.
I also recommend reading GPLama's more critical page on the FC-R9100-P power meter, highlighting some of the known issues with its design.
Details & Specifications
|Shimano model number:||FC-R9100-P|
|E-Tube Port type:||SD50|
|Component series:||DURA-ACE R9150 (Road)|
|Downloads:||FC-R9100-P Power Meter Dealer Manual|
FC-R9100-P Power Meter User Manual