4iiii Precision Gen 3 GRX 172.5mm PowerMeter Left Side Ready

4iiii PRECISION Shimano GRX RX810 Power Meter

Introducing the all new 4iiii PRECISION Shimano GRX RX810 Power Meter. 4iiii has combined their patent pending 3-D tri-axial strain gauge technology, measured at +/- 1.0% accuracy, with Shimano's GRX RX810 groupset. The result is one of the lightest, most affordable and most accurate direct force power meters available for gravel and adventure riders.

The 4iiii power meter measures left leg power and doubles this value to determine your total power. This left-only design allows for a power meter that is affordable, lightweight and easy to install. The power meter adds only 9 grams to your crank arm and is installed in about 10 minutes. In addition, the PRECISION is compatible with both ANT+ and Bluetooth SMART devices. This means you can use it with your favorite bicycle computer, watch or smart phone.

Key Product Details

Compatibility:

This power meter is compatible with Shimano GRX RX810 and RX600 cranksets. See Compatibility tab for more information.

Power Measurement:

This 4iiii power meter measures left leg power and doubles the value to account for both legs (assumes both legs are generating the same force).

New 4iiii GRX RX810 PRECISION 3!

The all new 4iiii GRX RX810 PRECISION 3 power meter features the following improvements over the version 2:

• 800 hours of battery life - the longest coin cell battery life in a power meter on the market!
• Sleeker, slimmer profile making most incompatibility issues a thing of the past.
• Stronger antenna for even better connectivity.
• Indicator light for battery life, successful zero-offset and when the unit has been turned on.