4iiii 105 R7100 PRECISION 3+ Road Bike Power Meter

The 4iiii 105 7100 PRECISION 3+ power meter takes your cycling performance to an unprecedented level, with +/- 1% accuracy. This lightweight and compact power meter is designed for cyclists keen to maximise their potential, whether you are training for a big race or want to master your local climb. With ultra-long battery life and smart technology, this power meter feels like an indispensable training partner.

Excellent technology for reliable measurements
The PRECISION 3+ power meter uses three strain gauges that register power from all directions, ensuring accurate and consistent measurements regardless of weather conditions. The crank-based design ensures you receive reliable data even in cold or hot conditions. This means you can start every ride with confidence and can rely on getting real insights into your performance.

Innovative features for carefree training
With a battery life of up to 800 hours on a single CR2032 button cell, you won't have to worry about charging. The automatic terrain selector adjusts the power feedback to the type of surface, so you always get the best response. Plus, integration with Apple Find My gives you extra peace of mind, knowing you can always track your bike. All in all, this power meter is not only a powerhouse but also a smart investment in your bike training routine.

• Connectivity: ANT+, Bluetooth
• Accuracy: +/- 1%
• Power supply: CR2032 (up to 800 hours)
• 3 year warranty
• Water resistance rating: IPX7
• Active temperature compensation
• Power range: 0 - 4000 W
• Cadence range: 30 - 170 RPM

• 4iiii 105 7100 PRECISION 3+ power meter
• 1x CR2032 coin cell battery

To mount this 4iiii power meter, you must first remove the current left crank arm. Fitting the 4iiii power meter goes in the exact same way as fitting a Shimano left crank arm.

1. Remove the pedal on the left side.
2. Loosen the two crank bolts at the top of the crank arm and remove the locking pin from the slot.
3. Remove the crank nut using this crank tool.
4. Now the crank arm is basically loose and can be taken off the axle. You may have to use quite a bit of force here. The most important thing is that you do not damage the crank arm.
5. Put the power meter crank arm in place by following the steps above in reverse order.
6. Finally, remember to mount the pedal on the new crank arm, and you are ready to ride!