Find More Power

PRECISION 3+ PRO Powermeter

Get ready to elevate your riding experience with the new PRECISION 3+ PRO Powermeter with Apple Find My. Delivering the same reliable and highly accurate power data you’ve come to expect from 4iiii, while enjoying the peace of mind that comes with knowing the location of your bike.

With advanced metrics such as left/right balance, pedal smoothness and torque effectiveness, the PRECISION 3+ PRO Powermeter provides the data you need for training and racing. With up to 550 hours of battery life, an automatic terrain selector, +/-1% accuracy and backed by our industry-leading 3-year warranty, the PRECISION 3+ PRO Powermeter will be your trusted tool for years to come.

Features

  • Apple Find My

    Offering the peace of mind in knowing where your power meter is.

  • Battery Life

    With up to 550 hours of battery life, you won’t have to worry about changing your battery for years to come.

  • Accuracy in 3D

    With +/- 1% accuracy, 4iiii is the only crank-based power meter to use 3 strain gauges to measure all forces in your pedal stroke.

  • Automatic Terrain Selector

    Detects the terrain you’re riding on for more responsive cadence and power feedback/data. Ride the roads less traveled with confidence.

  • Left Right Balance

    Dual power meters measure 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.

  • Ultra Low Profile

    With an ultra low profile design, the PRECISION 3+ PRO Powermeter is compatible with more bike frames than ever before.

  • Light Weight

    At only 29 grams the PRECISION 3+ PRO Powermeter weighs about the same as a few sips from your water bottle.

  • Waterproof

    Designed to work in our tough environment. With an IPX7 waterproof rating you can be assured that your power meter can handle the toughest conditions.

  • 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.

Athlete Reviews

  • Laurie Arseneault
    “

    4iiii’s innovative data tools have helped me develop as an athlete, and the new dual-sided PRECISION 3+ PRO Powermeter is no exception. It allows me to perfectly pace my training whether it’s a long endurance outing or a short and punchy interval day.

    ”
    Pittstop Racing Team, 2024
  • Sam Boardman
    “

    I’ve been testing one for a month now, and it’s been excellent! Accurate, dual-sided reading and an easy-to-use mobile app for calibration and settings adjustment! Plus, it’s a small unit, so minimal weight is added to the bike!

    ”
    Project Echelon, 2024
  • Victor Campenaerts
    “

    I’ve been testing the new 4iiii PRECISION 3+ PRO Powermeter and it is an improvement, it’s even more accurate. I’m very happy about this new product.

    ”
    Lotto-Dstny, 2023

Ride Ready or Factory Install

Have an existing crankset and want to add power?

With our Factory Install option you can send us your crankset and we will install a set of 4iiii power meters.

Want the power to ride right away?

Choose between Shimano R9200 and R8100 cranksets with a 4iiii PRECISION 3+ PRO Powermeter set pre-installed and ready to ride.

FAQs

  • How do I upgrade to a dual PRECISION 3+ PRO?

    If you currently have a PRECISION 3 Powermeter (without Find My), you are required to include it with your drive-side crank for installation. Your current pod needs to be upgraded to PRECISION 3+ to ensure compatibility with the drive-side power meter.

    If you currently have a PRECISION 3+ Powermeter you only need to send us your drive-side crank for installation. Learn More.

  • What’s new with PRECISION 3+ PRO?

    In addition to offering all the same features at the single-sided version, the PRECISION 3+ PRO will allow you to view advanced metrics like left/right balance, pedal smoothness, torque effectiveness, and thereby providing you with the most accurate power numbers for training and racing. The decrease in expected battery life from 800-hrs (single-sided power) to 500-hrs with the dual-sided PRECISION 3+ PRO is simply a reflection of the added functions required by the paired power meters.

  • How do I activate the Find My feature?

    You can activate the Apple Find My feature on the PRECISION 3+ PRO Powermeter by performing a battery in out 3 times to enter into Find My pairing mode then continue through the Apple Find My App. For full instructions please view the full manual.

  • Which cranks are compatible with PRECISION 3+ PRO?

    Shimano Ultegra FC-R8100 and Shimano Dura-Ace FC-R9200 will be the first two crankset models to offer PRECISION 3+ PRO, with more crank models being released in the months following. The 4iiii website will be updated with crank models as they become available.

  • Is the “Find My” feature available/compatible with Android phones?

    The Apple Find My feature is only compatible with Apple products.

  • Is the PRECISION 3+ PRO compatible with all bike frames?

    There are select bike frames with wide/flared bottom bracket shells that may present clearance challenges for the right side power meter. If you have questions about your bike’s clearance please contact us at support@4iiii.com prior to sending us your crankset.

Key Specifications

Feature PRECISION 3+ PRO PRECISION 3+
Type Dual Non-Drive Side
-
CR2032 Coin Cell
up to 550 uur up to 800 uur
IPx7 IPx7
Cadence Range 30 - 170 rpm 30 - 170 rpm
Power Range 0 - 4,000 W 0 - 4,000 W
5.5 mm 5.5 mm
29 g 9 g
Operating Temperature 0 - 50 ºC 0 - 50 ºC
Storage Temperature -40 - 60 ºC -40 - 60 ºC
IPX5
Protected against low pressure water stream from any angle.
IPX7
Withstands incidental exposure to water of up to 1 meter for up to 30 minutes.

Apple Find My

Offering the peace of mind in knowing where your power meter is.

Battery Life

Our products’ impressive long-lasting battery life means you won’t have to worry about frequent battery changes.

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.

Automatic Terrain Selector

Detects the terrain you’re riding on for more responsive cadence and power feedback/data. Ride the roads less traveled with confidence.

Ultra Low Profile

With an ultra low profile design, your 4iiii power meter is compatible with more bike frames than ever before.

Light Weight

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

Waterproof

Designed to work in our tough environment. With an IPX7 waterproof rating you can be assured that your power meter can handle the toughest conditions.

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.

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.

Dual-Channel ANT+ & Bluetooth Smart

4iiii power meters communicate their measurements over both ANT+ and Bluetooth, letting you read and record your power numbers on an enormous catalog of head units, sport watches, smartphones, and computers.

4iiii Ride App for Apple Watch

4iiii Ride App for Apple Watch

The PRECISION 3+ PRO Powermeter is compatible with every major head unit available on the market, but if you don’t have a head unit no worries! Download the 4iiii Ride App for Apple Watch.

The 4iiii Ride App is a new and convenient way to display, track and analyze your rides. You can view live heart rate, power, speed, cadence, and distance directly on your Apple Watch.

The Ride App saves workout metrics to Apple Fitness, allowing you to track your activity, calories, and close activity rings. Auto-sync to Strava, as well as export to any compatible training platform for activity sharing.

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