Shimano R9200P Power Meter In-Depth Review: Astonishingly Inaccurate I’ve been testing the Shimano latest generation power meter since last summer, comparing it to virtually every other viable power meter and smart trainer on the market today during that time frame. And as one who tests power meters for a living, it’s glaringly clear the Shimano R9200P follows in the footsteps of the previous gene
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