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The Lightest Power Meter On The Market
The 4iiii 105 FC-R7000 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 105 FC-R7000 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.
Features:
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 4iii app with ANT+ and Bluetooth SMART to transfer data
Available in 165-175mm crankarm lengths
Compatible with 105 FC-R7000 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.
Reviews Ordered by Most Relevant First
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Riding Game Changer
by mparic
Cycling Enthusiast
Portland, OR
I don't race so there's no need to have dual-sided meters (to track 50/50 power distribution) that are more expensive or prone to breakage (I'm looking at you, pedals). After a winter training on Zwift and Kickr, this power meter allows me to transfer all that hard work during the off-season into quantifiable gains on the road. Super easy to install and pair with my Garmin 530. Instead of watching distance and speed on my Garmin, I use a screen that has cadence (did I mention it works as a cadence sensor too?), heart rate and watt output. These stats keep me in the correct zone for the type of route I'm riding (short and hilly, metric, century or beyond). A power meter both on my trainer and road bike has been a game changer for me as I broke all my PRs within the first few weeks of the season.
Reviewed 5/24/2023
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Excellent Power Meter!
by LZaikoski
Cycling Enthusiast
PA
The power meter as a piece of cake to install, taking about 5min., just remove the old arm and replace it with the new one. And, it effortlessly paired with my tablet, iPhone and Garmin Edge 530. There have been 2 firmware updates and neither was any problem. The power and cadence data has been reliable on every ride I�ve taken. Having accurate power measurements is helping me improve my cycling performance.
Reviewed 5/23/2023
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Affordable power
easy to install and works like a charm.
Reviewed 5/2/2022
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