Crank arm power meter
INPEAK 105 R7100 Power Meter Crank Arm
A genuine Shimano 105 FC-R7100 left crank with INPEAK's power sensor built on, running on a standard CR2032 coin cell. Swap it for your existing left arm to add power and cadence to the bike.
Highlights
Why we rate it
Straight swap
Replaces the left arm of your 105 chainset, so there is nothing to change on the drive side.
Coin-cell power
A CR2032 lasts up to 200 hours of riding and is easy to replace at home or on the road.
Works with everything
Dual ANT+ and Bluetooth broadcast pairs with Garmin, Wahoo, smartphones and indoor apps such as Zwift.
Stable readings
Automatic temperature compensation and an accelerometer/gyroscope keep data consistent as conditions change.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Compatibility
- Shimano 105 FC-R7100 cranksets (Hollowtech II, 24 mm axle)
- Measurement
- Single-sided (left crank); power and cadence
- Accuracy
- ±2%
- Power range
- 20–2000 W
- Cadence range
- 20–200 rpm
- Connectivity
- ANT+ and Bluetooth Low Energy
- Water resistance
- IP67
- Temperature compensation
- Automatic, -5°C to +50°C operating range
- Calibration
- Manual zero offset
- Battery
- CR2032 coin cell (200 mAh), user-replaceable
- Battery life
- Up to 200 hours riding; up to 6 months in sleep
- Sensor weight
- Approx. 10 g added to the crank arm
- App
- INPEAK MANAGER for firmware updates and scale factor; Zwift-compatible mode
In the box
- Includes
- Left crank arm with integrated power meter, CR2032 battery, spare O-ring, device data card, sticker set, quick-start manual
Ordering
Available from The Cycle Collective
Available to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.