Replacement Shimano Ultegra FC-R8100 crank arm for the Shimano Ultegra FC-R8100 Power Meter Chainset.
Features
- Accurately calibrated strain gauges are integrated inside the crank arm, this provides a stable measurement system through rotation from both sides for extremely precise data
- +/-2% accuracy of strain gauge measured power
- Bluetooth and ANT+ with wireless firmware update and data acquisition system
- Easily rechargeable integrated battery with fully waterproof reliable electric system
- Industry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weight
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