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4iiii Power Meter GRX RX810/820 Precision 3+
Prices incl. VAT plus shipping costs
In stock, delivery time 1-3 days.
Why choose Powermetershop?
- Order number: SW10871
The 4iiii Shimano GRX RX810 Precision 3+ is a single-sided power meter for Shimano GRX cranks and is aimed at gravel and all-road riders who want to ride with watt-based data on long rides, bikepacking trips and structured training sessions. Measurement is taken on the left crank arm.
To install the 4iiii Shimano GRX RX810 Precision 3+, you need the TL-FC16 tool. If you do not already have it, it is best to order it at the same time.
Strengths and weaknesses
- Single-sided power measurement with high accuracy (± 1%).
- Up to 800 hours of runtime with one CR2032 coin cell.
- Integrated cadence measurement.
- 3-year manufacturer warranty.
- Very low weight at only 9 g added to the crank arm.
- Active temperature compensation.
- Easy to move between compatible bikes.
- Compatible with Shimano GRX cranks such as RX600, RX810 and RX820.
- Works with many bike computers, smartphones and indoor training apps through ANT+ and Bluetooth Smart.
- Apple Find My function.
- Left-side measurement only.
- When used on road cranks, the left pedal sits 2.5 mm farther out.
- TL-FC16 tool required for installation.
Gravel and all-road use
Left-side measurement keeps the system light, robust and easy to use. That is a practical advantage especially on long rides over mixed surfaces. The power meter works well for training control, climbing pace management and endurance analysis.
Compatibility with Shimano GRX
This model is compatible with Shimano GRX RX600, RX810 and RX820. It can also in principle be used on Shimano Hollowtech II road cranks. In that case, the left pedal sits 2.5 mm farther out because of the wider GRX Q-factor.
Technical features for gravel use
The power meter sits low and protected on the inside of the left crank arm and adds only 9 grams. It includes active temperature compensation, integrated cadence measurement, ANT+, Bluetooth Smart, wireless firmware updates and Apple Find My.
Specifications
|
Measurement location: |
Left crank arm |
|
Accuracy: |
± 1% |
|
Weight: |
9 g added to the crank arm |
|
Battery life: |
Up to 800 h (CR2032) |
|
Battery replacement: |
Tool-free |
|
Data transmission: |
ANT+, Bluetooth Smart Ready |
|
Firmware upgrades: |
Wireless upgrades via app |
|
Compatible software: |
TrainingPeaks, Strava, Garmin Training Center, Trainingstagebuch.org and others |
|
Power range: |
0 to 4000 watts |
|
Cadence range: |
30 to 170 rpm |
|
Water resistance: |
Yes, IPX7 |
|
Operating temperatures: |
0 to 50°C |
|
Storage temperature: |
-40 to 60°C |
|
Compatible cranks: |
Shimano GRX cranks; in principle also Shimano Hollowtech II road cranks |
|
Available lengths: |
170, 172.5, 175 mm |
|
Active temperature compensation: |
Yes |
|
Cadence measurement: |
Via accelerometers |
What's included
✔ 4iiii GRX RX810 Precision 3+ power meter
✔ Left crank arm
✔ Battery
✔ User manual
FAQ about the 4iiii Shimano GRX RX810 Precision 3+
Question: Does this model only fit RX810?
Answer: No. It is also compatible with GRX RX600 and RX820.
Question: What should I consider on road cranks?
Answer: The left pedal sits 2.5 mm farther out.
Manufacturer
4iiii Innovations Inc.
141 2 Ave E
T4C 2B9 Cochrane Alberta
Canada
Person responsible for the EU:
2moso BV
Zwarte Zee 2
3144 DE Maassluis
Netherlands
E-Mail: contact@2moso.com
EAN: 0871828011307
MPN: PML300-S17B00X
Product safety
Specific safety information that applies to this product can be found in the operating instructions for the product.
| Crank manufacturer: | Shimano |
| Carbon or aluminum: | Aluminum |
| Single or double sided: | left side |
| Road or MTB: | Road |
Bewertungsdurchschnitt
Great power meter - simpl...
Great power meter - simple setup, stabile performance.
Reliable powermeter. Easy...
Reliable powermeter. Easy to set up. Few seconds calibration and you are good to go. Responsive staff, product has been delivered on time.
power meter arrived quick...
power meter arrived quickly and was easy to install. connectivity to my smartphone and bike computer is flawless and I am able to track all my data in real-time.
Great power meter - simpl...
Great power meter - simple setup, stabile performance.
Reliable powermeter. Easy...
Reliable powermeter. Easy to set up. Few seconds calibration and you are good to go. Responsive staff, product has been delivered on time.
power meter arrived quick...
power meter arrived quickly and was easy to install. connectivity to my smartphone and bike computer is flawless and I am able to track all my data in real-time.
