4iiii Power Meter Shimano 105 FC-R7100 Precision 3+

The 4iiii 105 FC-R7100 Precision 3+ is a single-sided power meter for Shimano 105 R7100 cranks and other compatible Shimano Hollowtech II road cranks. It measures power on the left crank arm and suits riders who want to add precise yet uncomplicated power measurement to a current 12-speed road bike.

To install the 4iiii 105 FC-R7100 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.

Road use

This power meter is especially useful for structured training, climbing pace control, time trials and longer endurance efforts. Because measurement is taken on the left crank arm, the system stays light, robust and easier to use than more complex full systems. Riders who mainly want reliable watt-based training get a very practical solution here.

Compatibility with Shimano 105 R7100

This model is primarily intended for Shimano 105 FC-R7100. It is also compatible with all Shimano Hollowtech II road cranks, including Ultegra and Dura-Ace road cranks.

Precision 3+ features

The power meter sits well protected on the inside of the left crank arm and adds only 9 grams. Power measurement is supported by active temperature compensation and integrated cadence measurement. ANT+, Bluetooth Smart, wireless firmware updates and Apple Find My complete the platform in a useful way.