![Amazon.com: 4iiii Precision Powermeter Left Side | Shimano Ultegra R8000 | 172.5mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors Amazon.com: 4iiii Precision Powermeter Left Side | Shimano Ultegra R8000 | 172.5mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/215RcM0QxYL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA30%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com: 4iiii Precision Powermeter Left Side | Shimano Ultegra R8000 | 172.5mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors
![4iiii Precision Powermeter Left Side | Shimano Ultegra R8000 | 172.5mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors - Amazon.com 4iiii Precision Powermeter Left Side | Shimano Ultegra R8000 | 172.5mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors - Amazon.com](https://images-na.ssl-images-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/5199-GeftSL._AC_UL900_SR615,900_.jpg)
4iiii Precision Powermeter Left Side | Shimano Ultegra R8000 | 172.5mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors - Amazon.com
![Amazon.com: 4iiii Precision Powermeter Left Side | Shimano Ultegra R8000 | 172.5mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors Amazon.com: 4iiii Precision Powermeter Left Side | Shimano Ultegra R8000 | 172.5mm | Measures Each Pedal Stroke with 3 Strain Gauges : Sports & Outdoors](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/5199-GeftSL._AC_UF1000,1000_QL80_.jpg)