STAGES CYCLING Power Meter LR Shimano XT M8120 | 32 teeth
With the Stages LR power meter, the manufacturer who made unilateral power measurement salable, is now bringing a power meter with double-sided measurement onto the market. However, that does not mean the manufacturer doubts its concept of power measurement on a crank arm. Rather, the LR power meter is an addition to the range. The two-sided measurement is useful for drivers who, due to anatomical features, have strong deviations in force between both legs when pedaling and for drivers who want to analyze and optimize their pedaling technique more precisely.
The power measurement sensors are based on those of the established power meter L power measurement cranks of the current generation and add up to just 30 grams more weight than the XT M8120 crank without power measurement. Thanks to a further improved active temperature compensation, the measurement inaccuracies are kept very low at + -1.5%. In addition to the isolated performance measurement for each leg, data on pedaling efficiency can be obtained and evaluated via the double-sided measurement. The cadence is measured by an internal, improved acceleration sensor, so that no additional magnet is required. In connection with an integrated ring laser, the cadence resolution is even more precise. In order to be prepared for bad weather, the Stages LR power meter is waterproof according to the IPX7 standard (temporary submersion). Via the ANT + and Bluetooth Smart transmission standards, the Stages power meter is compatible with the Stages Dash and all ANT + capable bike computers and the latest smartphone models. Firmware upgrades can be carried out quickly and easily thanks to the wireless transmission to the power meter. An integrated LED display visualizes the battery level and the calibration result even without a connection to an app or the bike computer.
Technical specifications:
Power measurement: on both sides (1x sensor on the left crank arm and 1x sensor on the right crank arm)
Power range: 0 to 2500 watts
Accuracy: +/- 1.5%
Cadence measurement: via acceleration sensor or magnet
Cadence range: 20-220 revolutions per minute
Battery life: 200+ hours (button cell CR2032, can be changed without tools)
Waterproof: yes (IPX7; against temporary submersion)
axle type : Hollowtech II
Chainring: 32 teeth
chain line : 55 mm (for BOOST rear wheel hubs)
Q factor: 178 mm
Compatibility chain: Shimano CN-M8100
Transmission: ANT +, Bluetooth Smart Ready
Software Compatibility: Training Peaks, Strava, Garmin Training Center, and others
Crank length: 170 or 175 mm
Color: Black
Weight according to the manufacturer: Stages power meter only - 30g (left and right)
Weight weighed: 674g (175mm)
Scope of delivery:
1x left crank arm + stages power meter
1x right crank arm Stages power meter including crankshaft
1x chainring 32 teeth
2x battery CR2032
1x instruction