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The Lightest Power Meter On The Market
The 4iiii GRX RX810 Precision 3 Powermeter delivers industry-leading accuracy and reliability when you need it most. 4iiii's patented 3D Strain Gauge technology assures that the data you depend on will help lead you to your own personal best.
Packaged into a durable lightweight design and compatible with ANT+ and Bluetooth Smart headunits, the Precision 3 will help you train harder and smarter.
A ride-ready 4iiii Precision 3 includes and comes preinstalled on a brand-new GRX RX810 left-side crankarm, compatible with bottom brackets using the Hollowtech II interface.
Whether you are fighting for a Kona slot, spending countless hours on the indoor trainer or striving for a personal best — one thing is clear, success takes time. With up to 800 hours of battery life, +/-1% accuracy and weighing in at only 9 grams, the Precision 3 Powermeter will be your trusted training tool for years to come.
- Hollowtech II left side crank arm with built-in 4iiii power meter
- +/- 1.0% accuracy lets you collect training data with confidence
- Accelerometer with gyroscope offers detailed cadence readings
- 9g design is one of lightest crank arm-based meters on the market
- 800 hours of battery life via replaceable CR2032 battery
- Pair to the 4iiii app with ANT+ and Bluetooth SMART to transfer data
- Available in 170-175mm crankarm lengths
- Compatible with Shimano GRX series drivetrains
- Power range: 0-4000W
- Cadence range: 30-150RPM
- IPX7, IPX5 waterproof rated
- Sensor weight: 9g
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.