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IB17: Pioneer Powermeters for new Shimano Dura-Ace, Ultegra; new motion capture & iOS training app - Bikerumor
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Amazon.com : 4iiii Precision Powermeter Left Side | Shimano Ultegra R8000 | 170mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors
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