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4iiii Shop - USA/World: Single-sided and dual-sided power meters for Shimano, SRAM, Praxis, and Campagnolo cranks
![Amazon.com: 4iiii Precision Powermeter Left Side | Shimano FC-M9100-NDS | 170mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors Amazon.com: 4iiii Precision Powermeter Left Side | Shimano FC-M9100-NDS | 170mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors](https://m.media-amazon.com/images/I/514+-ZrvdtL.jpg)
Amazon.com: 4iiii Precision Powermeter Left Side | Shimano FC-M9100-NDS | 170mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors
![Power, power everywhere: 4iiii Precision power meter (Shimano 105 R7000) | the accidental randonneur Power, power everywhere: 4iiii Precision power meter (Shimano 105 R7000) | the accidental randonneur](https://i.imgur.com/WEIpFyY.jpg)