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CatEye 4iiii Precision Shimano 105 5800 Power Meter - 172.5mm

Item: CE-4I5800-BASE
SAVE 5% $399.99 $419.99
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Accurately measuring your power just doesn't get simpler and minimalist than by using the CatEye/4iiii Precision Shimano 105 5800 Power Meter. The compact, 9-gram CatEye/4iiii Precision power meter is bonded to a non-drive Shimano 105 5800 crank arm so it's just a matter of swapping this crank arm for the non-drive crank arm on your existing Shimano crankset. The power meter delivers industry-leading accuracy, highly dependable cadence data, and 3D power meter technology capable of measuring tri-axial strain on your crank arm so you can train harder and smarter. For optimal versatility, the power meter is compatible with ANT+ and Bluetooth Smart head units, smartphones, as well as other 4iiii products. The power meter operates for 100+ hours via a 2032 coin cell battery.

Note: the Shimano 105 5800 non-drive crank arm length is 172.5mm.
  • CatEye 4iiii Precision power meter bonded to non-drive side Shimano 105 5800 crank arm
  • 3D power meter technology measures tri-axial strain on your crank arm
  • Power meter unit adds just 9 grams of weight to the 105 5800 crank arm
  • Compatible with ANT+ and Bluetooth Smart head units, smartphones, and other 4iiii products
  • Easy setup and maintenance
  • Battery status indicator via 4iiii app
  • Data accuracy: +/1 1% error margin
  • Battery life: 100+ hours via 2032 coin cell battery
  • Over the air upgrade capability for adding new features and updates
  • Crank arm length: 172.5mm
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