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Left-Side PRECISION 3+ Powermeter - Ride Ready

Non-Drive Side Precision 3+ Powermeter

Ride Ready
$514.99 CAD
Shipping calculated at checkout.

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.

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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

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Customer Reviews

Based on 39 reviews
72%
(28)
10%
(4)
0%
(0)
5%
(2)
13%
(5)
100.0
S
SIMON B.
great power meter!

Delivery was blazing fast, installation took minutes and configuration was also simple & fast. Works perfectly, and also the Find My compatibility is a great addon. Happy customer!

A
Alex
Does not fit my bike

Bought a powermeter for my road bike some years ago. Switched my bike to a newer one and now the powermeter does not fit into the frame.

G
George P.
Love the new Precision 3+

I was very pleased with my purchase! The Precision 3+ replaced a much older, much less reliable old Stages crank-based PM. The new 4iiii has been rock solid with no drops. Very happy with the 165mm crank length. Extremely happy with the availability and how quickly it was sent to me. Just an excellent piece of engineering!

N
Nico
Great pwoermeter

The powermeter works as expected and fits perfectly in my bike

A
Angus D.
Great meter, destroyed by battery cap/Reece's Law

The meter is great value and very useful, until you need to change the battery. Understandably the meters sit in someone's inventory and the coin battery discharges, so you try and change the battery, as the 4iiii app says battery 38% etc. The 4iiii app is useful.

The issue is a very fiddly cradle in which the battery fits within the plastic cap. It is so easy to damage this that you're better taking the crank off the bike and fitting it at your desk with extra lighting tweezers etc. Even then it creates connectivity issues. This is nuts! Changing a battery should be easy and not cause all sorts of operational issues. Really looking forward to 4iiii finding a workaround Reece's Law and hoping they upgrade all of us with their new battery cap design.

Finally, I cannot go without cursing Reece's Law where costs must greatly exceed benefits. If coin batteries are so bad, get rid of them, kids stick stuff in their mouths, in the 4iiii instance they'll swallow the cap too! Lawmakers! What good is this doing anyone?

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