Stages Cycling Power L Power Meter Crank Arm Shimano Ultegra R8100

The Stages Power L is pre-mounted on a left Shimano Ultegra R8100 crank arm and is suitable for all frames compatible with Shimano Hollowtech II cranks.

Tour tested
Stages powermeters have accompanied athletes on their way to three Tour de France victories in a row and many national and world championship titles. If you look at racing as the toughest test bench for the best products, the Stages Powermeter has proven to be the best powermeter.

Active temperature compensation as a standard function
Providing consistent performance data is the most important function of a powermeter. 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 in accurate power measurement and the reason why athletes can always trust Stages Power.

Independent calibration for maximum precision measurement
Each Stages Powermeter is individually calibrated. This ensures +/-1.5% measurement accuracy and is the industry best for non-scientific power measurement systems. Individual calibration on the Stages Power LR means that the output power data from both sides are real measured values and are not estimates.

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 to Stages Power LR (bilateral) systems.