The 4iiii Precision power meter is a relative new crank based power meter from Canadian company 4iiii Innovations. The 4iiii Precision power meter comes in different crank lengths for all major Shimano groupsets from 105 (5800), Shimano Ultegra (6800) up to Shimano Dura Ace (9000).
The 4iiii Precision power meter comes with the free 4iiii Device Configuration app for Android and iOS. The Dura Ace 9000 version can be upgraded to a dual Precision Pro power meter system and is used as such by professional World Tour cycling teams Ettixx Quick Step and Bora Hansgrohe.
