Left-Side PRECISION Powermeter - Ride Ready ReCYCLED

Non-Drive Side Precision Powermeter

Ride Ready reCYCLED
$254.99 USD $334.99 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 Powermeter delivers 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 lead you to your own Yellow Jersey. Packaged into a durable lightweight design and compatible with ANT+ and Bluetooth Smart headunits, PRECISION will help you train harder and smarter.

Details

How Does It Work?

A ride ready PRECISION pod is already preinstalled on a previously-ridden Shimano crank arm at our factory. The moment you order, our fulfillment team will get it on its way to you, and you should be able to ride with power as soon as it arrives.

Important: You need to use the frame clearance guides to ensure there is space between your crank and frame for the PRECISION pods.

In The Box

Once your ride-ready reCYCLED PRECISION Powermeter arrives, it just needs to be installed on your bike using the standard Shimano crank installation process. Connect a headunit or computer, and you can start riding with power!

Features

  • 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.

  • Battery Life

    Our 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.

  • 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
Type Non-drive Side
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CR2032 Coin Cell
100+ hrs
IPx7, IPx5
Cadence Rating 30 - 150 rpm
Power Range 0 - 4,000 W
7.5 mm
9 g
Operating Temperature 0 - 50 ºC
Storage Temperature -20 - 50 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 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 meter 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. Quickstart Guide
  2. Clearance Guide (Letter)
  3. Clearance Guide (A4)
  4. iOS App
  5. Android App

Customer Reviews

Based on 55 reviews
91%
(50)
5%
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4%
(2)
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M
Matthew Neuharth
Dead

After very little use my pm has died. Went through all the tests and no solution besides buy a new one. 😔.

J
J.B.
The Right Choice

Was NOT in the market for a new bike, but couldn't pass on the one I bought, but realized that I had grown used to using the PM on my old bike, and would need one for the new ride. Did a LOT of shopping and came down to 4iiii and their main competition. When I found the clearance section on 4iiii's website, I knew I was in the right place. Have only ridden with the new PM for a couple weeks. Install was insanely simple, as was connection to my Garmin. Pain free and even though it was previously ridden, there were only a couple of scratches on it, less than what I'll likely ding it up after riding a year. Best option in my opinion since it was lower cost and comes with the 4iiii warranty. Once I get the new bike paid off, I may consider buying another for my gravel bike so that I've got power data for both rides.

A
A.M.

Great Power Meter compared to the other companies I used in the past

G
Guy
Works as advertised

Have now trained with Stages, Powerops pedals, Garmin Vector all of which work well to various degrees. So far 4iiii single sided have not disappointed and I now prefer the crank ahead of power pedal measuring option as it gives me the option of a better pedal with lower stack which I prefer. Delivery to SA (only necessary as local agent does not stock my crank length) was incredibly quick.

E
Eric Chilson
Previously Ridden??

After starting an indoor training plan on a smart trainer, it quickly became apparent that riding with a power meter was going to be necessary. I was told not to spend $1000 to find out that I was pushing 180w up my local climb. The left side Precision was the perfect fit but I have the older R6800 Shimano Ultegra and to my surprise, 4iiii had a previously ridden option at a price I couldn't ignore. I was expecting to see a crank arm that looked like it had been ridden and the condition was way beyond expectation! Easy installation, even easier to pair with my Wahoo Roam and now I am ruined!! My entire strategy of my riding is based upon my power numbers now. I think on my next bike that I will opt for the both sided option because I would like to see the variation of sides but if you're on the fence about using a power meter, treat yourself to left side unit and don't look back!! Exceeded my expectations on everything!