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Dura-Ace 9200 Precision 3 Left-Side Power Meter

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Why We Like The 4iiii Dura-Ace 9200 Precision 3 Left-Side Power Meter

The 4iiii Dura-Ace 9200 Precision 3 Left-Side Power Meter provides accurate power measurements up to 4000 watts at a +/- 1% accuracy, both on the road and on the trainer, thanks to the patented 3D strain gauge technology. This left-side arm is extremely lightweight to make us faster one gram at a time, and features up to 800 hours of battery life, allowing for lots of riding before worrying about a charge.


  • A left-side power meter arm for Shimano Dura Ace 9200 cranks
  • Patented 3D strain gauge measures to a +/- 1% accuracy
  • 9g of total weight is one of the lightest on the market
  • Battery life lasts up to 800 hours with CR2032 coin cell battery
  • Ultra-low profile design is compatible with many bike frames
  • The indicator light lets us know when our power is ready to ride
  • ANT+ and Bluetooth compatible for use with a preferred head unit
  • Item #FII000E
Powermeter Type
left-side crank arm
Shimano Dura Ace 9200 cranks, bottom brackets using the Hollowtech II interface, nearly every head unit, smartphone, or computer with ANT+ or Bluetooth
IPX7 waterproof rating, indicator light
Accuracy (+/-)
+/- 1%
CR2032 Coin Cell
Operating Time
up to 800 hours
Claimed Weight
road cycling
Manufacturer Warranty
3 years