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4iiii Ultegra R8100 Precision 3+ PRO
745.07
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INPEAK Powercrank-E TWIN2 Ultegra FC-R8100
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Compare Products (4)
This is what our customers think
Reviews
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Cons
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According to the product specialist
Pros
| A double-sided power meter allows you to measure the power transmission of both legs individually. |
| Thanks to the Automatic Terrain Selector, you are assured of accurate power measurement on different types of terrain. |
| With an IPX7 waterproof rating and a battery life of up to 550 hours, you are guaranteed endless fun. |
| Very accurate force determination with a deviation of up to 1%. |
| Suitable for Shimano 12-speed cranksets. |
| A double-sided power meter allows you to measure the power transmission of both legs individually. |
| Thanks to the Automatic Terrain Selector, you are assured of accurate power measurement on different types of terrain. |
| With an IPX7 waterproof rating and a battery life of up to 550 hours, you are guaranteed endless fun. |
| Very accurate force determination with a deviation of up to 1%. |
| Suitable for Shimano 12-speed cranksets. |
| TWiN2 technology allows you to measure the power output of your left and right legs separately for high accuracy (+/- 2%). |
| The built-in battery lasts for up to 90 hours and can be charged easily using the included magnetic USB cable. |
| Automatic Temperature Compensation ensures consistent and reliable readings at temperatures between -5°C and +50°C. |
| As the TWiN2 version measures your power output from both legs, you get a perfect insight into your left-right balance and your pedalling efficiency (Pedal Smoothness). |
| The transmitters weigh only about 10 grams each, so they add very little weight to your bike. |
| The battery is easy to charge using the included magnetic USB cable; replacing button cells is a thing of the past. |
Cons
| The CR2032 battery is not rechargeable, so you may need to replace it from time to time. |
| The CR2032 battery is not rechargeable, so you may need to replace it from time to time. |
| As there is no power adapter in the box, you will need to provide your own 5V USB charger to plug the cable into. |
| You need at least 8 mm of clearance between your current crank arm and the horizontal chainstay; otherwise the sensor will rub against the bike frame. |
Specifications
Power Meter
With power meter
Measuring Position
Crank
Crank
Crank
Crank
Power Source
Battery
Battery
Rechargeable battery
Rechargeable battery
Battery Type
CR2032
CR2032
Ratio
50 / 34
52 / 36
52 / 36
50 / 34
52 / 36
54 / 40
52 / 36
54 / 40
Crankset axle fit
Shimano Hollowtech II (24 mm)
Shimano Hollowtech II (24 mm)
Shimano Hollowtech II (24 mm)
Shimano Hollowtech II (24 mm)
Crank Ratio
52 / 36
50 / 34
52 / 36
52 / 36
Crank Length
160 mm
165 mm
170 mm
172.5 mm
175 mm
165 mm
170 mm
172.5 mm
175 mm
165 mm
170 mm
172.5 mm
175 mm
170 mm
172.5 mm
175 mm
165 mm
170 mm
172.5 mm
175 mm
170 mm
172.5 mm
175 mm
170 mm
172.5 mm
172.5 mm
Compatible with
Shimano
Shimano
Compatibility
ANT+
Yes, with cycling navigation with Bluetooth/ANT+
Yes, with cycling navigation with Bluetooth/ANT+
ANT+
Yes, with cycling navigation with Bluetooth/ANT+
Yes, with cycling navigation with Bluetooth/ANT+
Bluetooth
ANT+
ANT+
Bluetooth
ANT+
ANT+
Single-/dual sided
Dual-sided
Dual-sided
Dual-sided
Dual-sided
Application
Road
Road
Road
Road
Cadence
Yes
Yes
Yes
Yes
Generation
3rd
3rd
Chainring Type
Round
Round
Round
Colour
Black
Black
Supports 'Apple Find My'
Yes
Yes
No
No