Stages
XTR M9120 R G3 Power Meter - 32T Chainring

The Stages Power meter for Shimano's XTR M9100 crank set is available as Stages Power L (left-sided only), Stages Power LR (dual-sided) and Stages Power R (right-sided only) option. 

Stages Power L - is built on to a non-drive side Shimano XTR M9100 crank arm and is compatible with all frames that fit Shimano XTR M9100 and XTR M9120 cranks.

Stages Power LR - is built on to a Shimano XTR M9100 crank set, placed on both the drive and non-drive side of the crank in order to independently measure a rider's left and right legs.

Stages Power R - is built on to a drive side Shimano XTR M9100 crank arm and is compatible with all frames that fit Shimano XTR M9100 and XTR M9120 cranks.

Specification:

Accuracy: +/- 1,5% accurate in all conditions

Power meter housing: low profile design, with robust door interface. Tool free battery replacement on the left arm and phillips head screw access on the drive side

Weight: Only adds 35g (Stages Power LR) / 15g (Stages Power L) / 20g (Stages Power R) to base crank set

Battery life: 175+ hours (Stages Power LR, via 2 coin cell: CR2032), 200+ hours (coin cell: CR2032) when used as a single sided Stages Power L or Stages Power R meter

Power range (Watts): 0 - 2500

Cadence range (rpm): 20 - 220

Water resistance rating: IPX7

Tour Proven

Stages Power has carried riders to three consecutive Tour de France victories, plus many more world and national championships. If you believe racing provides the world’s best product proving ground, then Stages Power is proven as the world’s best power meter.

Active Temperature Compensation as standard equipment

Consistency of measurement is the most important feature of a power meter. Stages Power was the first meter to make temperature compensation an automatic process ensuring accurate readings no matter the environmental conditions. ATC is the key reason a rider can trust data from Stages Power in all conditions.

Individual meter calibration for the most accurate results

Each Stages Power meter is calibrated individually to ensure a +/- 1,5% accuracy level, which is an industry best for non-scientific power meters. Individual calibration for the dual-sided option means that you can trust the data produced by our system, as it's a real measurement and not an estimation.

Stages Power R drive-side meter for added compatibility or upgrading an existing Stages Power L meter to Stages Power LR

While not widespread there are some key bicycle models that are not compatible with the non-drive crank arm based Stages Power meter because of interference with the power meter housing, for example Cervelo's P5 and many bikes with chainstay mounted brake calipers. Stages Power R offers increased compatibility with these models as well as the ability to upgrade existing Stages Power L power meters to Stages Power LR (dual) meter systems.

Features:

• Active temperature compensation
• Accelerometer based cadence measurement or the option to use a Hall-Effect based system with magnet (coming soon)
• Wirelessly upgradable firmware
• LED indicator for visual indication of battery levels and zero reset confirmation without connected app or head unit
• Updated accelerometer and addition of gyroscope for improved cadence resolution
• NFC tap to pair for some phones and devices
• Upgraded BLE and ANT+ radios offer a 6x improvement of data transmission strength