Your crank. Our Gen 3 Stages power meter. Convert your current Shimano Ultegra R8100 left crank arm into a world class training and pacing device with the Stages Factory Install program.

Please confirm your crank arm/bike has clearance for a power meter by checking the Stages Factory Installed Power Meter Fitment Guide. Convert your user-provided Shimano Ultegra R8100 left crank arm into a Stages Gen 3 Power Meter and add power and data to your rides. After purchasing, Stages will provide a prepaid shipping label for you to mail your crank to our Boulder, Colorado factory and we’ll apply the same state-of-the-art manufacturing process we use for our manufacturer supplied units. In around two weeks you’ll receive your original crank arm with a new Gen 3 Stages power meter built in and backed by the Stages Factory Warranty.

Stages Power L Ultegra R8100 Left Crank Arm Factory Install Service

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