4iiii Precision 3+ PRO R8100 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 providing the peace of mind that comes with knowing the location of your bike.

Apple Find My:
Offering the peace of mind in knowing where your power meter is.

550 Hour Battery Life:
With up to 550 hours of battery life, using the same CR2032 coin cell battery,  you won’t have to worry about changing your PRECISION 3+ PRO 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.

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

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

ANT+ and Bluetooth:
Get the same numbers training inside and outside. The PRECISION 3+ PRO Powermeter is both ANT+ and BLE compatible so you can use it on your preferred head unit and favorite indoor training app.

Waterproof:
Based in the foothills of the Canadian Rockies, we were tired of training tools not 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:
4iiii power meters are waterproof, durable, and designed to be accurate and precise even in the harshest conditions. Because of this, we are happy to offer an industry-leading 3-year warranty.

Indoor Training:
If the weather or climate make riding outdoors tough, your 4iiii PRECISION 3+ PRO Powermeter 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.

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.

How Does It Work?
The PRECISION 3+ PRO Powermeter is so much more than a dual power meter. It's your training partner that offers peace of mind. While you are riding, your PRECISION 3+ PRO Powermeter will transmit  watts, cadence, cycling metrics, 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+ PRO 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.