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Power Pro Power Meter Ultegra R8100


Current price: £799.99
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Whether you ride road or gravel, tracking power output for precise training metrics is essential. Giant’s all-new dual sided Power Pro power meter makes training with power more accessible to more riders everywhere and features built-in gyro sensors that help compensate for ground surge impacts occuring on uneven surfaces, delivering clean and accurate data through an integrated system that’s precise, reliable and simple to set up.


  • 6 built-in axis gyro sensors inside both crank arm sensors provide vibration compensation by filtering ground surge impacts when riding on uneven surfaces
  • Giant-exclusive algorithm and auto temperature calibration ensure precise and stable data output to +/-2 % accuracy free of environmental distractions
  • Accelerometer allows magnet-free measurement
  • High-capacity lithium battery delivers up to 100 hours of riding on a single charge
  • IPX7 waterproof
  • Integrated magnetic rechargeable design protects device from water and dust ingress
  • LED indicator displays battery level and alerts recharge when power gets below 30%
  • Bluetooth® Smart/ANT+ compatible for broad compatibility, easy calibration and firmware updates.
  • 2 year global warranty
  • Standard crank lengths available in either 50/34t or 52/36t configuration


Weight: Left side 6 g; Right side 6 g
Size: Left 56*29*8mm / 2.2*1.1*0.3 inch (L*W*H)
Waterproof: IPX7
Power Range: 0 – 3000 watts
Cadence Range: 20 -200 rpm
Available: Shimano
Chainring Teeth: 50/34t or 52/36t
Available: Shimano Crank
Arm Length: 160mm / 165mm / 170mm / 172.5mm / 175mm
Connections: BLE/ANT+
Battery Type: Lithium-ion
Battery Run Time: 100 Hours
Battery Charge Time: 1 hr
Battery Life Indicator: Yes
Accuracy: ± 2%
Temperature Compensation: Yes
Vibration Compensation: Yes
Left/Right Balance: Yes
Pedaling Efficiency: Yes
Firmware: Giant Ridelink
Warranty: 2 years

Every effort has been made to ensure accuracy throughout this website. However, Giant reserves the right to change bike specifications, features, prices and colours without prior notice.