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4iiii Precision Ultegra R8000 Power Meter

4iiii Precision Ultegra R8000 Power Meter
59 reviews
Compatible with
Crank Length
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1607,30
Please select a version to see the stock

  • Free tracked delivery to Poland
  • Trustpilot review 9.6 out of 71.693 reviews

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Pros & Cons

Pros & Cons

  • This is a very lightweight power meter.
  • Tri-axial measurement provides very accurate data.
  • Mounting, calibration, and pairing with a cycle computer is very simple.
  • Less accurate than a double-sided power meter.
Read more on what our customers have to say about this product

Specifications

Specifications

Brand 4iiii
Application Road / Cyclocross / Gravel
Single-/dual sided Single-sided
Measuring Position Crank
Power Source Battery
Cadence Yes
Compatible with Shimano
Type of axle 24 mm (Shimano Hollowtech II)
Chainring Type Round
All specifications

Description

Description

The 4iiii R8000 power meter is a lightweight, accurate, easy to use power meter. It is so lightweight that it adds only 9 grams to a standard Shimano crank, which makes it the lightest power meter on the market!
The 4iiii R8000 power meter measures very accurately with a deviation of only +/-1%. It measures the power generated by your left leg and doubles it to determine the total power of both legs. , but is based on the power that’s generated by your left leg. Research shows that for riders without limitations, the power of the left and the right leg almost equalises with equal effort.

This power meter transmits both an ANT+ and a Bluetooth signal, which makes it compatible with almost all bike computers. If you are not sure about the compatibility with your bike computer or sports watch, consult the computer's user manual which should include this information.

The 4iiii R8000 power meter can be installed quickly and easily. The calibration is done with 4iiii Device Configuration, an app for Android and iOS. With this app you can also check the remaining lifetime of the CR2032 button cell battery, whose total lifetime is more than 100 riding hours. The power meter unit weighs only 9 grams and its measurement deviation is only +/-1%.
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Reviews

Reviews

9.4 / 10
Average from 59 reviews
5
48 reviews
4
11 reviews
3
0 reviews
2
0 reviews
1
0 reviews

Photos from customers


Most recent reviews

8 / 10

Great piece of kit, superb value for money!

- Paul 21 December 2020

I already have an Ultegra 6800 4iiii power meter. When this new version went on sale at a great price point, I pulled the trigger straight away. Simple installation, easy to use and consistent, accurate power readings. My only slight gripe is that the 4iiii App can only see one PM at a time, so need to keep deleting one or the other and run a new search, in order to carry out a Pre ride calibration.

Pros & Cons

Accurate
Light
Value for money
App has limitations

10 / 10

Great powermeter really happy with it.

- Conn McDunphy 14 December 2020

Has been accurate so fair. Timely delivery. No complaints.

Pros & Cons

Accurate
Easy assembly
Light
Looks good
None

8 / 10

Very good

- Ricardo 14 December 2020

Very good for one side! The only thing that i notice is that the readings are very spiky

Pros & Cons

accuracy
discrete
price
readings are very spiky

10 / 10

Great value product.

- Philip 13 December 2020

Great value product easy to set up with Garmin head unit and was delivered very quickly when purchased.

10 / 10

Good value power meter

- Raluca 13 December 2020

Very pleased with this addition for my training bike. Quick delivery. Looks solid and good quality.

Pros & Cons

Easy to connect
Easy to set up
Low cost
Not dual sided
Show all reviews

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59 reviews 50 reviews 12 reviews 1 review
Application Road / Cyclocross / Gravel Road / Cyclocross / Gravel Road / Cyclocross / Gravel Road / Cyclocross / Gravel
Single-/dual sided Single-sided Single-sided Dual-sided Dual-sided
Measuring Position Crank Crank Spider Spider
Power Source Battery Battery Battery Battery
Cadence Yes Yes Yes Yes
Compatible with Shimano Shimano Sram Campagnolo / Shimano / Sram
1607,30 1837,60 2054,10 From 1653,40
This product View product View product View product

All specifications

Brand 4iiii
Application
Road / Cyclocross / Gravel
Single-/dual sided
Single-sided
Measuring Position
Crank
Power Source
Battery
Cadence
Yes
Compatible with
Shimano
Type of axle
24 mm (Shimano Hollowtech II)
Chainring Type
Round
Compatibility
ANT+ / Bluetooth
Colour
Grey

Manufacturer specifications

• Weight: 9 grams
• Precision of measurement: +/- 1% deviation
• Battery lifespan: more than 100 hours of riding with one CR2032 button cell battery