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1738547 / 54294799843674

Product Details

4iii PRECISION 3+ Ultegra R8100 Left Arm Power Meter

The PRECISION 3+ Dura-Ace R9200 Left Arm Power Meter is compact and ultralight, weighing in at 9 grams, and 4iii's most powerful unit so far. It features support for Apple Find My, offers +/-1% accuracy, utilises an automated terrain detector, and will send accurate data to your choice of bike computer with up to 800 hours of battery life. 

The PRECISION 3+ Dura-Ace R9200 Left Arm Power Meter is a dependable tool for realising your potential, sending watts, cadence, and calories to your preferred head unit while you're riding. Use Apple Find My to check the power meter's location on a map when it's not in use: it can be added to the Find My app so that you can find it on an iPhone, iPad, Mac, or with the Apple Watch's Find Items app.

This power meter is ride-ready and easily fitted usng the regular Shimano crank installation process. Simply connect to a head unit and begin riding with power.

Features
  • Apple 'Find My' - offering the peace of mind in knowing where your power meter is
  • Up to 800 hours of battery life using the same CR2032 coin cell battery, so you won’t have to worry about changing your PRECISION 3+ battery for years to come
  • Not everyone has the perfect pedal stroke. With +/- 1% accuracy, 4iiii is the only crank-based power meter to use 3 strain gauges to measure all forces in your pedal stroke
  • Detects the terrain you’re riding on for more responsive cadence and power feedback/data. Ride the roads less travelled with confidence
  • You probably won’t need to use it, but it’s reassuring to know that all 4iiii power meters are backed by an industry leading 3-year warranty
  • Indicator light to see when the power meter has turned on, performed a successful Zero-offset, or has a low battery
  • Both ANT+ and BLE compatible for use with your preferred head unit and favorite indoor training app
  • IPX7 waterproof rating, so you can be assured that your power meter can handle the toughest conditions
  • The PRECISION 3+ Power Meter can be used with all popular indoor-training apps, such as Zwift, TrainerRoad, Wahoo SYSTM, Rouvy, and more.
  • Battery Type CR2032 Coin Cell
  • Cadence Range 30 - 170 RPM
  • Power Range 0 - 4,000 W
  • Height 5.5mm
  • Weight: 9g
  • Operating Temperature 0 to 50 °C
  • Communication Protocols ANT+, Bluetooth
Specifications
Compatibility (Device / Platform)
ANT+, Bluetooth, iOS
Connectivity Type
ANT+, Bluetooth
Power Source Type
Disposable Battery
Primary Product Type (Electronics)
Power Meter
Water Resistance Rating
IPX7
Accuracy Rating (%)
1 %
Battery Life (Typical Use, Hours)
800 hrs
Battery Type (Power Meter)
CR2032
Cadence Measurement
Built-in
Display Type
No Display
Firmware Upgradable
Yes
Maximum Measurable Power (W)
4000 W
Measurement Position
Crank Arm
Measures Left / Right Balance
No
Mounting Location
Handlebar
Weight (g)
9 g
Product code
1738547 / 54294799843674
Reviews
Rating 4 out of 5
4
Value of Product
3.3
Quality of Product
4
Rating 1 out of 5
Anonymous,
Verified purchaser

Initially very pleased with my power meter. However a few eeeks after purchase it stopped working. Very annoyingly 2 weeks before a major weekend of riding 500km. Sent off by Sigma to be looked at under warranty. No idea when it'll be returned. Now without power meter. Quite unhappy about it all. 300km on Saturday. Followed by 200km on Sunday....all by paced by heartrate instead of power. Completely the opposite of what i wanted ...

Rating 5 out of 5
CS101,
Verified purchaser

Replacement PM so pretty much click and play, easy to pair with head unit

Shipping & Returns

Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.

Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.

Q & A

1 question answered

  1. Would this be ok as a replacement for my crank arm 175mm shimano FC-RS510? Cheers

    Asked by D30 (Hereford)

    1. Hi there, Yes this will work, Many thanks Joe W

      Joe W