Brand: Stages Cycling
Reference: U81-Z4
The Stages Powermeter for Shimano's Ultegra R8100 crankset is available as Stages Power LR, pre-mounts to the left crank arm and derailleur of a Shimano Ultegra R8100 crankset and measures leg power values left and right independently.Accuracy:Measurement accuracy of +/- 1.5% in all conditionsPower meter housingFlat design with robust connection between the battery cover and the case. Tool-free battery change on the left crankWeightOnly 35 grams (Stages Power LR) / 15 grams (Stages Power L) / 20 grams (Stages Power R) additional weightBattery life175+ hours (Stages Power LR, with 2 CR2032 button cells), 200+ hours (CR2032 button cell) for Stages Power L or Stages Power R single-sided systemsPower range (watts)0 - 2500Cadence range (rpm)20 - 220ImpermeabilityIPX7Road testedStage power meters have accompanied athletes on their way to three consecutive Tour de France victories and many national and world champion titles. If we consider racing to be the toughest test bed for the best products, the Stages power meter has proven to be the best.Active Temperature Compensation (ATC) as standard featureThe most important function of a power meter is to provide consistent performance data. The Stages Powermeter was the first power meter to implement temperature compensation as an automated process, ensuring accurate measurements in any environmental conditions. ATC is the key factor for accurate power measurement and the reason athletes can always rely on Stages Power.Independent calibration for maximum precision measurementEach Stages Powermeter is individually calibrated. It guarantees +/-1.5% measurement accuracy and is the best in the industry for non-scientific power measurement systems.Stages Power R for additional compatibility or the ability to upgrade an existing Stages Power L to a Stages Power LR.Although not a widespread problem, there are some bike models (e.g. Cervelo P5 or others with direct mount brakes) where the Stages Power L is not compatible due to interference of the power meter housing with the frame /brake. The Stages Power R allows for improved compatibility with these models. It also opens up the possibility of upgrading existing Stages Power L systems to Stages Power LR (double-sided).Active temperature compensationCadence measurement through an integrated acceleration sensor, later there will also be the possibility of measuring cadence data through a system based on the Hall effect with a magnetWireless Firmware UpdatesThe integrated LED display displays the battery level and calibration result. No active connection to the app or bike computer requiredImproved acceleration sensor and additional integrated ring laser improve cadence resolutionImproved Bluetooth and ANT+ antennas increase data transmission power six-fold