New 3D power meter hits the scales and just 9g

If you’re a weight weenie who wants to ride with power but don’t want to add unnecessary grams to your bike, then the new 4iiii Precision 2.0 power meter could be for you, with its left side only design hitting scales at just 9g.

Power is measured through a small pod that is, like with the Stages power meter, attached to the left crank arm, and which, according to 4iiii, is not only the world’s lightest power meter, but also the world’s first “3D” crank-based power meter.

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“Capturing all forces on the cranks in three dimensions (bend, shear and axial) moves traditional power monitoring a quantum step ahead to improve accuracy and lay the foundation for new features,” said 4iiii CEO, Kip Fyfe. “This increase in power data quality and quantity is key to empowering coaches and cyclists with the detailed feedback they need to optimize their training and racing.”


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This means that the 4iiii Precision 2.0 power meter claims to have a 99% accuracy in power measurement and also deliver dependable cadence data, all of which can be transmitted via either ANT+ or Bluetooth. Power is provided by a 2032 coin cell battery (which can be picked up quite easily at most supermarkets), with battery life being claimed at 100 hours. But there should be no excuse to let it run all the way down, with a battery warning light coming on when you hit 15% charge.

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There aren’t any details on UK pricing just yet, but availablility is set for July, with delivery by two methods: Factory Install or Ride Ready. Through Factory Install you will be able to send 4iiii the crank you already use to have the power meter installed, while through Ride Ready you’ll buy the crank and power meter from 4iiii.