Home Products Power Meters Precision 3+
Left-Side PRECISION 3+ Powermeter - Ride Ready

Non-Drive Side Precision 3+ Powermeter

Ride Ready
$334.99 USD

Our most powerful unit to date, compressed into a smaller, lighter package and featuring support for Apple Find My, the PRECISION 3+ Powermeter is a proven choice of pros and weekend warriors alike. Whether you’re fighting for a Kona qualification spot, logging countless hours on virtual riding platforms or looking to better your time up the local KOM segment, you want accurate and reliable tools to unlock your potential. With up to 800 hours of battery life, an automatic terrain selector, +/-1% accuracy and backed by our industry-leading 3-year warranty, the PRECISION 3+ Powermeter will be your trusted tool for years to come.

Winner of:

Details

How does it work?

The PRECISION 3+ Powermeter is so much more than a power meter. It’s your training partner that offers peace of mind. While you are riding, your PRECISION 3+ Powermeter will transmit watts, cadence, and calories to your head unit of choice. While the power meter is not in use, Find My is enabled and allows you to see its location on a map. You can add your power meter to the Find My app and locate it on an iPhone, iPad, Mac or using the Find Items app on an Apple Watch.

In the Box

Once your ride-ready PRECISION 3+ Powermeter arrives, it just needs to be installed on your bike using the standard Shimano crank installation process. Connect a head unit or computer, and you can start riding with power. Connect to the Find My app with your iPhone or iPad to start tracking your power meter.

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

Features

  • Apple Find My

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

  • Battery Life

    With up to 800 hours of battery life, you won’t have to worry about changing your battery for years to come.

  • 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

    At only 9 grams the PRECISION 3+ Powermeter weighs about the same as a sip from your water bottle. Our goal is to help you get faster, not to slow you down.

  • 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.

Specifications

Feature PRECISION 3+
Type Non-Drive Side
-
CR2032 Coin Cell
up to 800 uur
IPx7
Cadence Range 30 - 170 rpm
Power Range 0 - 4,000 W
5.5 mm
9 g
Operating Temperature 0 - 50 ºC
Storage Temperature -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.

Indoors

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

Resources

  1. User Manual
  2. Frame Clearance Guide
  3. iOS App
  4. Android App

Customer Reviews

Based on 10 reviews
80%
(8)
10%
(1)
0%
(0)
0%
(0)
10%
(1)
S
S.B.

Great product and easy to connect to bicycle computer

w
w.v.

My third power meter from 4iiii purchased for my gravel bike. Now I can compare road and gravel power numbers always been curious about.

E
E.H.
A great product at a good price point

This is a very good power meter, but I haven't done any real power meter testing in my life. Coming from my first power meter, a pioneer, this was a needed upgrade, as my prior power meter was close to 6 years old. This was far easier to set up and just from a racer's point, I appreciate that it is sleek and transmits the data quickly to my head unit. As I transition from junior racing to U23, this was a good first impression of 4iiii, and so I hope to continue using 4iiii power meters in the future.

R
R.L.

Left-Side PRECISION 3+ Powermeter - Ride Ready

S
S.C.
Easy install, great data

This was so easy to add and then link up with my Garmin. I now start a ride and this syncs up automatically. Definitely like the Find My option for piece of mind, plus my fam can track me during races.

12