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Product Details
INPEAK Ultegra R8100 Power Meter Crank Arm
The INPEAK Ultegra R8100 Power Meter Crank Arm is the most popular option in the INPEAK range, created from a genuine passion for cycling. More than a simple measuring device, it acts as a reliable training partner that helps riders progress to a higher level of performance.
INPEAK Reliable Data Transmission
The INPEAK POWERCRANK system uses both ANT plus and BLE transmission protocols to send power, cadence and a wide range of detailed cycling metrics to compatible devices. Its waterproof and impact resistant housing is built to meet the demands of MTB, gravel and road riding, ensuring dependable operation in tough conditions.
INPEAK Consistent Accuracy
With long run times powered by a standard CR2023 battery, the unit delivers consistent performance. ATC automatic temperature compensation ensures precise power measurement in all conditions, maintaining accuracy from minus five to fifty degrees Celsius.
In The Box
- Crank Arm with integrated power meter
- Instruction manual
- Sticker set
- Spare O-Ring
- Device data card
- 1x CR2032 battery
Features
- Measurement Precision: ±2%
- Power Measurement Range: 20–2000 W
- Cadence Range: 20–200 rpm
- Weight: 10 g (INPEAK device)
- Case Tightness: IP67
- Manual Zero Offset Calibration: Yes
- Temperature Compensation: Yes
- Gyroscope and Accelerometer: Yes
- Torque Effectiveness: Yes
- Pedal Smoothness: Yes
- Cycling Dynamics: Yes (TWiN2)
- Balance L/R: Yes (TWiN2)
- Operating Temperature: -5°C to +50°C
- Storage Temperature: -20°C to +50°
- Battery Type: Lithium CR2032 3V
- Battery Capacity: 200 mAh
- Battery Autonomy in Use: Maximum 200 hours
- Battery Autonomy in Sleep: Maximum 6 months
- Battery Autonomy in Ship Mode: Maximum 24 months
- Low Battery Notification: Yes
- Software Update from INPEAK Manager App: Yes
- Scale Factor Modification: Yes
- Zwift Compatible Mode: Yes
- ANT+ Compatibility: Yes
- Bluetooth Low Energy Compatibility: Yes
- Auto Sleep: Yes
- Auto Wake Up: Yes
Specifications
- Compatibility (Device / Platform)
- ANT+, Bluetooth
- Connectivity Type
- ANT+, Bluetooth
- Power Source Type
- Disposable Battery
- Primary Product Type (Electronics)
- Power Meter
- Water Resistance Rating
- Waterproof
- Accuracy Rating (%)
- 2 %
- Battery Life (Typical Use, Hours)
- 200 hrs
- Battery Type (Power Meter)
- CR2032
- Cadence Measurement
- Built-in
- Discipline Compatibility
- Road
- Display Type
- No Display
- Firmware Upgradable
- Yes
- Maximum Measurable Power (W)
- 2000 W
- Measurement Position
- Crank Arm
- Measures Left / Right Balance
- No
- Mounting Location
- Crank Arm
- Weight (g)
- 10 g
- Product code
- 1986621 / 54293464023386
Reviews
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Shipping & Returns
Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.
Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.
Q & A
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