

PRECISION 3+ PRO Powermeter R8100 172.5MM 50/34
Details
How Does it Work?
The PRECISION 3+ PRO 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+ PRO 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+ 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.
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.
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.
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
Dual power meters measure the power from each individual leg to calculate your total power output.
Light Weight
4iiii makes the lightest power meters on the market. We're committed to helping you get faster, one gram at a time.
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.
Details
How Does it Work?
The PRECISION 3+ PRO 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+ PRO 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+ 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.
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.
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.
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
Dual power meters measure the power from each individual leg to calculate your total power output.
Light Weight
4iiii makes the lightest power meters on the market. We're committed to helping you get faster, one gram at a time.
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.