4iiii Ultegra R8100 Precision 3+ Power Meter

4iiii Ultegra R8100 Precision 3+ Power Meter
11 reviews
Compatible with
Crank Length
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395.43
71.16 discount

  • Free tracked delivery to Ireland

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Pros & Cons

Pros & Cons

  • Thanks to support for the 'Apple Find My' app, you can use an Apple device to see the location of your powermeter.
  • The new 'Automatic Terrain Selector' feature accurately measures your power output on any terrain.
  • The Precision 3+ has a battery life of as much as 800 hours.
  • The small sensor makes this powermeter compatible with many frames.
  • Mounting, calibration and connection to your bike computer is very easy.
  • You can only see the location of your powermeter on Apple devices.
  • A single-sided powermeter is less accurate than a double-sided powermeter.
Read more on what our customers have to say about this product

Specifications

Specifications

Brand
4iiii
Battery Type
CR2032
Application
Road / Cyclocross / Gravel
Single-/dual sided
Single-sided
Measuring Position
Crank
Power Source
Battery
Compatible with
Shimano
Supports 'Apple Find My'
Yes
Cadence
Yes
All specifications

Reviews

Reviews

4.8 / 5
Average from 11 reviews
5
9 reviews
4
2 reviews
3
0 reviews
2
0 reviews
1
0 reviews

Most recent reviews

5 / 5

Good single-sided power meter within a reasonable budget

- Jan 25 January 2025

Been looking for a power meter for not too much money for a while. This one fully meets my expectations, does its job, reasonable battery consumption and easy assembly despite the lack of a good manual, but be careful, in my case there was a ring between the crank and the bearing, which I had not seen anywhere on internet videos. Fitted this in between and it ran like clockwork.

Pros & Cons

Although one-sided, it is accurate
Easy mounting
New information about your performance
Manual very brief
Automatic translation

5 / 5

Great crank for power measurement

- Martin 1 October 2024

Works without problems, accurate data measurement

Automatic translation

5 / 5

Super Powermeter

- Armands 22 August 2024

The star spanner for removing the crank must be ordered separately. The crank cannot be removed without it.

Automatic translation

5 / 5

Best decision

- Marlene 16 August 2024

Perfect for performance training

Automatic translation

4 / 5

Good product!

- Stijn 17 July 2024

Satisfied with the product, ideal entry-level model for those wanting to work with a powermeter. Single-sided measurement but quite accurate.

Pros & Cons

Battery easily replaceable
Fast connection to device and calibration
Quick to place on the bicycle
Less accurate than double-sided
No left and right power measurement
Single-sided Powermeter (though ideal for beginners)
Automatic translation

5

Jan, 25 January 2025

Good single-sided power meter within a reasonable budget

Been looking for a power meter for not too much money for a while. This one fully meets my expectations, does its job, reasonable battery consumption and easy assembly despite the lack of a good manual, but be careful, in my case there was a ring between the crank and the bearing, which I had not seen anywhere on internet videos. Fitted this in between and it ran like clockwork.

  • Although one-sided, it is accurate
  • Easy mounting
  • New information about your performance
  • Manual very brief
Automatic translation

5

Martin, 1 October 2024

Great crank for power measurement

Works without problems, accurate data measurement

Automatic translation

5

Armands, 22 August 2024

Super Powermeter

The star spanner for removing the crank must be ordered separately. The crank cannot be removed without it.

Automatic translation

5

Marlene, 16 August 2024

Best decision

Perfect for performance training

Automatic translation

4

Stijn, 17 July 2024

Good product!

Satisfied with the product, ideal entry-level model for those wanting to work with a powermeter. Single-sided measurement but quite accurate.

  • Battery easily replaceable
  • Fast connection to device and calibration
  • Quick to place on the bicycle
  • Less accurate than double-sided
  • No left and right power measurement
Automatic translation

Recommended by the product specialist

Recommended by the product specialist


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11 reviews 18 reviews 2 reviews 5 reviews
Battery Type CR2032 CR2032 CR1/3N
Application Road / Cyclocross / Gravel Road / Cyclocross / Gravel Road / Cyclocross / Gravel Road
Single-/dual sided Single-sided Single-sided Single-sided Single-sided / Dual-sided
Measuring Position Crank Crank Crank Pedal
Power Source Battery Battery Battery Battery
Compatible with Shimano Shimano SRAM
395.43 340.49 283.61 From 456.42
This product View product View product View product

All specifications

General

Brand
4iiii
Battery Type
CR2032
Application
Road / Cyclocross / Gravel
Single-/dual sided
Single-sided
Measuring Position
Crank
Power Source
Battery
Compatible with
Shimano
Supports 'Apple Find My'
Yes
Cadence
Yes
Compatibility
Yes, with cycling navigation with Bluetooth/ANT+ / ANT+
Colour
Black

All specifications

Brand
4iiii

General

Battery Type
CR2032
Application
Road / Cyclocross / Gravel
Single-/dual sided
Single-sided
Measuring Position
Crank
Power Source
Battery
Compatible with
Shimano
Supports 'Apple Find My'
Yes
Cadence
Yes
Compatibility
Yes, with cycling navigation with Bluetooth/ANT+ / ANT+
Colour
Black