Stages 105 5800 Power Meter

Stages 105 5800 2nd generation power meter! This Stages 105 5800 powermeter has been drastically improved compared to its predecessor. This crank arm measures the power as accurately as the 1st generation (± 2% deviation) but is smaller in size. In addition, thanks to a better fitting battery cover it's even more water resistant. The Stages 105 5800 crankarm can be mounted on other Shimano cranksets such as the Shimano 5700, Ultegra 6700/6800 or Dura-Ace 7900/9000.

The Stages power meter measures power with great accuracy (± 2% deviation) via the left crank arm. Because the unit is pre-mounted to the crank arm, it's very light and small. The crank arm is just 20 grams heavier compared to a standard crank. This makes the Stages unit the lightest power meter at 33-185g lighter compared to competing power meters. All of this at a very attractive price!

The data is transferred via ANT+ and Bluetooth Smart technology, allowing almost any bike computer to be paired. The firmware updates can easily be done wireless from your phone. The cadence is measured wireless and without requiring additional sensors through the internal accelerometer.

Note: Make sure the power meter is compatible with your direct mount rear brake under your bottom bracket.