The new Gen 3 Stages Power meter is built on to a Shimano Ultegra R8000 crankset. The Stages Power meter is placed on both the drive and non-drive side of the crank in order to independently measure a rider’s left and right legs.
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.
Stages Power meters are calibrated individually to ensure a +/- 1.5% accuracy level. Individual calibration means that you can trust the bi-lateral data produced by our system, as it’s a real measurement and not an estimation.
Additional features:

+/- 1.5 % accuracy in all conditions
Active temperature compensation
Accelerometer based cadence measurement
Wirelessly upgradable firmware
LED indicator displays battery level at start up (with no need for connect to an app) and confirms successful zero reset
Updated accelorometer and addition of gyroscope for improved cadence resolution
Upgraded BLE and ANT+ radios offer a 6x improvement of data transmission strength

Specifications

Accuracy: ± 1.5%
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 to base crankset
Battery Life: 175+ hours (via 2 coin cell: CR2032)
Power range (Watts): 0 to 2500
Cadence range (rpm): 20-220
Water resistance rating: IPX7

Compatibility
This new Shimano R8000 Stages Power LR power meter is compatible with all Shimano Hollowtech II, 11-speed, road drivetrains

Frame Compatibility: Most frames, see fit guide in our Support section
Device Compatibility: ANT+, Bluetooth Smart Ready
Software Compatibility: Stages Link, Training Peaks, Strava, Garmin Training Center and others

In The Box

Non-drive-side power meter
Drive-side power meter
Shimano chainrings
2x high quality CR2032 coin cell battery
Lifetime access to Stages Link for power meter management and firmware upgrade.
2 months free access to Stages Link premium training and coaching features.
Product Identification Card with Serial Number and ANT+ I.D. Number.
User Guide