
4iiii PRECISION 3+ Ride Ready XT FC-M8100/8120 Power Meter Left Arm
The 4iiii PRECISION 3+ Ride Ready is a left-arm power meter pre-installed on a Shimano Deore XT crank arm, compatible with both the FC-M8100 and FC-M8120 in 12-speed MTB drivetrains. It measures power output with ±1% accuracy and includes Apple Find My support for locating the unit on and off the trail.
The meter ships in a smaller and lighter form factor than its predecessor, with an automatic terrain selector that adjusts calibration across varied riding conditions. Battery life reaches up to 800 hours, reducing time spent on maintenance, and every unit is backed by a 3-year warranty.
Quick Facts
| Feature | Specification |
|---|---|
| Compatibility | Shimano Deore XT FC-M8100 / FC-M8120, 12-Speed MTB |
| Chainline | 52mm (FC-M8100) / 55mm (FC-M8120, Boost) |
| Accuracy | ±1% |
| Battery Life | Up to 800 hours |
| Apple Find My | Supported |
| Warranty | 3 years |
Original: $365.76
-65%$365.76
$128.02Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The 4iiii PRECISION 3+ Ride Ready is a left-arm power meter pre-installed on a Shimano Deore XT crank arm, compatible with both the FC-M8100 and FC-M8120 in 12-speed MTB drivetrains. It measures power output with ±1% accuracy and includes Apple Find My support for locating the unit on and off the trail.
The meter ships in a smaller and lighter form factor than its predecessor, with an automatic terrain selector that adjusts calibration across varied riding conditions. Battery life reaches up to 800 hours, reducing time spent on maintenance, and every unit is backed by a 3-year warranty.
Quick Facts
| Feature | Specification |
|---|---|
| Compatibility | Shimano Deore XT FC-M8100 / FC-M8120, 12-Speed MTB |
| Chainline | 52mm (FC-M8100) / 55mm (FC-M8120, Boost) |
| Accuracy | ±1% |
| Battery Life | Up to 800 hours |
| Apple Find My | Supported |
| Warranty | 3 years |


















