4iiii Precision 3+ Non-Drive Power Meter - Ultegra R8100
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4iiii Precision 3+ Non-Drive Power Meter - Ultegra R8100
4iiii Precision 3+ Non-Drive Power Meter - Ultegra R8100 Info
The 4iiii Precision 3+ Non-Drive Power Meter - Ultegra R8100 bolts directly onto your existing Shimano Ultegra R8100 non-drive crank arm — no new crankset required, no complicated installation. A strain gauge bonded to the arm captures your power output with claimed accuracy of +/- 1%, while the low-profile pod is designed to sit close enough to the arm that clearance against the chainstay isn't a concern.
Pairing is straightforward: the Precision 3+ transmits over both ANT+ and Bluetooth simultaneously, so it works with your head unit, your phone, and your training platform of choice without adapters or compromises. IPX7 water resistance means wet weather and post-ride hose-downs aren't a problem. If you're running an R8100 crankset and want power data without a full drivetrain swap, this is the direct path.
4iiii Precision 3+ Non-Drive Power Meter Specs at a Glance
- Compatibility: Shimano Ultegra R8100 crankset (non-drive side)
- Dual wireless: ANT+ and Bluetooth simultaneous transmission
- Claimed accuracy: +/- 1%
- Water resistance: IPX7 rated
- Available crank lengths: 165mm, 170mm, 172.5mm, 175mm
