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4iiii PRECISION Power Meter For Shimano XT M8000

Josh Matthew July 16, 2021
5.00 out of 5 based on 3 customer ratings
(3 customer reviews)


4iiii power for your Shimano XT M8000 crankset!

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4iiii PRECISION Power Meter For Shimano XT M8000

The 4iiii PRECISION Power Meter for Shimano XT M8000 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 +/- 1.0%.

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.



Most Affordable DFPM

The 4iiii PRECISION is one of the most affordable, ready to ride direct force power meters available.

High Level of Accuracy

The PRECISION is accurate to within +/- 1.0%. This compares to average accuracy of +/- 1.0-2.0% for most other power meters.

Lightest Power Meter

At only 9 grams of added weight, the PRECISION is the lightest power meter you can buy!

Easy to Install

Installation is a breeze. Just swap it out for your current left-side crank arm and you’re ready to ride! Installation takes minutes…not hours.

ANT+ & Bluetooth SMART

The power meter transmits data via both ANT+ and Bluetooth SMART so you can use it with a wide range of devices.


The power meter is available in the following crank arm lengths: 170 mm | 175 mm



The 4iiii power meter is compatible with XT M8000/8020/8030 cranksets. It is also compatible with all other Shimano x000/x020/x030 series MTB cranksets such as the XTR M9000/M9020/M9030 or the SLX M7000/7020/7030.

It is not compatible with the newer x100 series crankset such as the XTR M9100’s, XT M8100’s or SLX M7100’s.

Please note, this product requires a Shimano Crankarm Cap Tool (sold by us separately) for installation.


In the Box

  • 4iiii PRECISION Power Meter
  • 2 2032 coin cell batteries
  • Quick Start guide


4iiii PRECISION Shimano XT M8000 Specs

Name4iiii PRECISION XT M8000
Bike TypeMTB
Location of Power MeasurementCrank Arm
Left or Both Legs MeasuredLeft only
Independent Left/Right MeasurementNo
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.0%
Weight9 grams (added weight)
Battery TypeCR2032 coin cell
Battery Life100 hours
Method of Cadence MeasurementAccelerometer
Warranty3 years


3 reviews for 4iiii PRECISION Power Meter For Shimano XT M8000

  1. Claudio (verified owner)

    Competence and seriousness in the world of pm

    • Power Meter City

      Hi Claudio. Thank you! We are here if there is anything else we can do!

  2. Herman Conradie (verified owner)

    Opening the box the unit is packed neatly with a quick start guide. It only take a couple of minutes to install and easily paired with my iPhone and Wahoo Elemnts Bolt. Calibrating the power meter can easily be done from the phone app, and also from the head unit. Have been riding with it over a month now and so far the power readings look accurate compared to my training. It also provides a cadence reading if you use it with a turbo trainer. Love my power meter and it is very well priced.

    • Power Meter City

      Hi Herman! Thanks for this kind review on your 4iiii PRECISION Power Meter For Shimano XT M8000. We hope you continue to enjoy them and please let us know if there is anything else we can do!

  3. Mark Toles

    Put this on my XC mountain bike. Took about 5 mins to install. Got it connected to my phone and wahoo Roam quickly. Worked flawlessly so far.

    • Power Meter City

      Hi Mark. Thank you for this great review! Happy to know it worked flawlessly. We hope you continue to enjoy them and please let us know if there is anything else we can do! Thanks!

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