Dual-Side PRECISION PRO Powermeter - Factory Install

Dual Side Precision PRO Powermeter

Factory Install
$424.99 USD $499.99 USD Sale

Used to pace attacks up the Alpe D’Huez in the Tour de France and to hammer on the Queen K during the Ironman World Championships, the PRECISION PRO Powermeter delivers industry leading accuracy and reliability when you need it most. Through our patented 3D Strain Gauge technology, you can be assured that the data you depend on will help lead you to your own Yellow Jersey.

The PRECISION PRO will allow you to view advanced metrics like left/right balance, pedal smoothness, torque effectiveness, and provide you with the most accurate power numbers during training and racing. Ridden by the top cyclists and triathletes in the world, the PRECISION PRO is the ultimate training tool to help you reach your goals.


Warranty & Durability

Ridden through rain storms at Strade Bianche, mud filled cross country mountain bike races, and even tested amidst the salt spray of the ocean on Oracle Team USA’s America’s Cup competitors, you can be assured that your 4iiii power meter will be as tough as you are and is backed with an industry leading 3-year warranty. All 4iiii power meters are IPX7-rated for water immersion up to one meter and backed with an industry-leading 3-year warranty.

  1. 4iiii Warranty Policy


  • Light Weight

    4iiii makes the lightest power meter on the market. We’re committed to helping you get faster, one gram at a time.

  • Accuracy in 3D

    Not everyone has the perfect pedal stroke. With +/- 1% accuracy, 4iiii is the only crank-based power meter to use 3 strain gauges to measure all forces in your pedal stroke.

  • Left Right Balance

    A dual power meter measures the power from each individual leg to calculate your total power output.

  • Cycling Metrics

    Get more data like pedal smoothness and torque effectiveness to analyze and optimize your pedal stroke.

  • 3 Year Warranty

    A lot can happen in 3 years. You probably won’t need to use it, but it’s reassuring to know that all 4iiii power meters are backed by an industry leading 3-year warranty.


Specification Value
Module Weight Non-drive Side: 9g (0.3oz)
Drive Side: 16g (0.6oz)
Power Range 0 - 4,000W
Cadence Range 30 - 150RPM
Communication Protocols ANT+, Bluetooth
Operating Temperature 0 - 50°C (32 - 122°F)
Storage Temperature -20 - 50°C (4 - 122°F)
Battery Type CR2032 lithium ion coin cell
Battery Life 100+ hrs
Waterproof Rating IPx7, IPx5
Length 37.7mm (1.5in)
Width 27.6mm (1.1in)
Depth 7.5mm (0.3in)


A 4iiii PRECISION PRO power meter is available ready to ride on any of the crankset configurations listed below. If your desired crankset isn't listed, we may have other products that are compatible.

  • Campagnolo Potenza
  • FSA K-Force (Carbon)
  • Praxis Zayante M30
  • Praxis Zayante M30 Turn
  • SRAM X01 (Carbon)
  • SRAM XX1 (Carbon)
  • Shimano 105 FC-R7000
  • Shimano Ultegra FC-R8000
  • Shimano Ultegra FC-R8100
  • Shimano Dura-Ace FC-9000
  • Shimano Dura-Ace FC-R9100
  • Shimano Dura-Ace FC-R9200
  • Shimano GRX FC-RX810
  • Shimano XT FC-M8000 1×
  • Shimano XT FC-M8100 1×
  • Shimano XTR FC-M9000 1×
  • Shimano XTR FC-M9020 1×
  • Shimano XTR FC-M9100 1×
  • Shimano XTR FC-M9120 1×


If the weather or climate make riding outdoors tough, your 4iiii power meter can be used with all popular indoor-training apps, such as Zwift, TrainerRoad, Wahoo SYSTM, Rouvy, and more. Simply use your favourite app’s connection procedure over ANT+ or Bluetooth Smart, put your bike on a trainer, and get riding!

  1. Indoor Training

Factory Install

  • Clearance Check

    Clearance Check

    Before purchasing, confirm there is enough clearance between your crank arm and your bike frame for the power meter pod to fit. To ensure clearance and compatibility, you will be required to send us a photo of a successful clearance-check before sending us your crank or crankset. If unsure, contact us for help.

    1. PRECISION 3+ Clearance
    2. PRECISION 3 Clearance
    3. PRECISION Clearance
    4. Podiiiium Clearance
    5. Support
  • Shipping


    Shipping instructions will be sent to you with your order confirmation, including the UK address to send your crank to. Find an appropriate package for your crank and send it on its way, we recommend a tracked and signed for service.

    Shipping instructions will be sent to you with your order confirmation. Find an appropriate package for your crank and send it on its way, we recommend a tracked and signed for service.

  • Installation

    Manufacturing & Installation

    Your crank will have the pod attached using the exact tools, techniques, and staff we use on all our products, and must pass all the same high quality checks. Manufacturing should take about 7-10 business days, and you will be given a tracking link so you can follow your crank through the process.

  • Reinstallation

    Shipping Back & Reinstallation

    Once manufacturing is complete, we will ship your crank or crankset back using the shipping method you selected at checkout. As soon as you receive it, you can reinstall it on your bike.

  • Go Ride!

    Go Ride!

    Once your crank or crankset is reinstalled on your bike, go have fun! 4iiii power meters have a 3-year warranty, temperature compensation, and are IPX7 waterproof, so you can be sure they’re as tough as your workouts are.

    1. Learn About Ant+ and Bluetooth Smart
    2. Why Train With Power


  1. Quickstart Guide
  2. Clearance Guide (Letter)
  3. Clearance Guide (A4)
  4. iOS App
  5. Android App

Customer Reviews

Based on 16 reviews
Stephen Kent
Dura-ace 9200

Process took forever! The drive side looks installed a bit sloppy, kind of far away from the crank arm. When connecting to app would only pickup one side, batteries supplied was low on one side and completely dead on other. Took a long time to fix the issue (trying to figure out which battery was dead) and get the unit to register as a dual meter. Hopefully all issues are fixed now.

Seth Kaiser
Dura-Ace FC-9100 Factory Install

I have been using this power meter for a few months now and can say without a doubt that the entire process was seamless. I was worried about taking my cranks off and sending them away, but they made the entire process easy and simple to do. I could regularly look to see where my cranks were at in the install process and track the shipment when they were being sent back. Once I installed them on the bike, it took about 15 seconds to get it paired to my phone, and Garmin head unit. It could not have been easier. Power readings seem to be accurate and has taking my training to a whole new level. I was use to doing structured workouts on Zwift based on power, and this makes those same work outs easy to do outside. Would highly recommend this power meter!

Anthony Tremblay
Unit not working and costly repair

Received a defective unit. Tried to troubleshot with the service representative who was nice and helpful hence the 2 stars (instead of 1). Troubleshooting did not work ...
I had to return the unit (which was brand new!) to the factory for repair. I lost my bike for over 2 weeks since it was factory install on my only crankset. I had to pay for the shipping which is costly for an item of such value and with all the packing to protect the crankset. In the end, it costed me more than buying the whole package : new crankset with the power meter. I would not recommand factory installation. You better buy the whole thing new from the beginning. If I had known, that is what I would have done in the first place.

Dustin Cushing
Dura Ace 9200 Precision Dual Side

24hr shipping to and from 4iiii, around 2 weeks in total. This is my second 4iiii power meter and both work great. Zero drop outs.

Andy S.
Great product, even better service!

Really impressed by the 4iiii powermeter. Opted for the dual-side meter and the entire factory install process was handled efficiently, with the customer portal keeping me up to date every step of the way. Once the meter arrived, I had a minor s/w problem which was quickly resolved by Kerry in support thanks to a pre-ride calibration. Thanks very much!