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4iiii PRECISION Power Meter For Shimano DURA-ACE 9000

josh September 19, 2018
5.00 out of 5 based on 1 customer rating
(1 customer review)

$599.99 $449.99

4iiii’s accuracy and innovation paired with Shimano’s top end DURA-ACE group set

Clear selection


About the 4iiii PRECISION Power Meter For Shimano DURA-ACE 9000

Used by the World Pro Etixx-Quick-Step Team, the 4iiii PRECISION Power Meter for Shimano DURA-ACE 9000 is the lightest, most affordable direct force power meter available. The added weight of the 4iiii PRECISION is only 9 grams and it is accurate to within +/- 1%.

The 4iiii PRECISION is a left-only crank arm-based power meter and replaces your current left side crank arm. The 4iiii takes the power that is generated by your left leg and doubles it in order to determine your total power output.

In addition to being affordable, lightweight and highly accurate, the 4iiii PRECISION measures precise cadence data, has 3D power meter technology capable of measuring tri-axial strain and is compatible with both ANT+ and Bluetooth SMART devices.


4iiii PRECISION Power Meter For Shimano DURA-ACE 9000 Options

Crank arm lengths: 165 mm | 170 mm | 172.5 mm | 175 mm



The 4iiii PRECISION Shimano Power Meter is compatible with all Shimano Hollowtech II road cranks.


In the Box

  • 4iiii PRECISION Power Meter For Shimano DURA-ACE 9000
  • 2 2032 coin cell batteries
  • Quick Start guide



Power Meter TypeCrank arm
Type: GaugeStrain
Number of strain gaugesNA
Weight9 grams (plus weight of crank arm)
Crank Arm Lengths165, 170, 172.5, 175 mm
Battery Type2032 coin cell
Battery Life100 hours
Left/Right Power MeasurementNo
Communication ProtocolBluetooth SMART and ANT+
Claimed Accuracy+/- 1.0%

1 review for 4iiii PRECISION Power Meter For Shimano DURA-ACE 9000

  1. Rated 5 out of 5

    Jeremy (verified owner)

    Bought this a while ago and had been training with it regularly, product arrived in a couple of days and overall user experience had been great.

    Pairing with Garmin 520 is easy, updating the firmware via mobile app is a snap too, most important of all I could finally train with peace in mind knowing I’m within the correct zones and prepare for the strength and skills needed later for climbing.

    Great product and excellent services, highly recommended.

    • Power Meter City

      Power Meter City

      Hi Jeremy, We have had great success with the PRECISION in terms of both accuracy and reliability. Glad you are enjoying it. Let us know if there is anything else we can do for you.

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