The Stages Power LR dual-sided meter is what Team Sky raced during the last two Tours de France, but with a slightly different battery placement on the right crank.
The Power LR offers true left/right measurement, and can be split into two separate meters if the rider desires. The Power LR was announced last fall, and is shipping now.
The new Stages Power R right-side meter works just like the original Stages meter by measuring power on one leg and doubling the wattage number. This unit can be a solution for certain bikes where left-crank clearance is limited, such as aero bikes with brake calipers underneath the chainstays.
Coming in Dura-Ace and Ultegra, you can buy the full LR crankset or just the new right-crank Power R meterCourtesy Stages
The Power R can also be paired with new or existing Gen 2 Stages Power left-crank meters.
Stages claims the dual-sided Power LR meter only weighs 35g more than a stock Shimano crankset.
As with previous Stages meters, the Power LR and Power R work on ANT+ and Bluetooth, powered by a user-replaceable 2032 battery with a claimed 175+ hours of life.
Stages Power LR and Power R pricing and availability