The 4iiii PRECISION 3+ is a single-sided, crank-based power meter that arrives pre-installed on a Shimano 105 crank arm, ready to swap in for the left side. It includes Apple Find My technology for tracking your bike's location and delivers ±1% power accuracy across road, gravel, and high-cadence sprint conditions.

Automatic terrain selection adapts the meter's readings to varying surface conditions without manual input, covering road, gravel, and mixed terrain. The unit arrives pre-installed on the crank arm, so installation requires only swapping out the left-side arm to begin collecting power data.

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