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Stages CyclingShimano Dura-Ace R9100 L Gen 3 Power Meter Crank Arm

$449.99

Item # SGC000U

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  • Black, 170mm ($449.99)
  • Black, 172.5mm ($449.99)
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Item # SGC000U
Description

Shimano Dura-Ace R9100 L Gen 3 Power Meter Crank Arm

The Dura-Ace 9100 group looks really nice on your bike and even more importantly, works really well. Now that you're looking to take your riding to the next level, you want to add a power meter to your setup to maximize your training but you have a couple of reservations. You don't want to part with the excellent crankset, and you don’t want it to cost a fortune. Thanks to Stages Cycling and its Shimano Dura-Ace R9100 L Gen 3 Power Meter Crank Arm, you can simply add on a non-driveside crankarm letting you keep the sleek 9100 aesthetic and precision shifting rings while adding accurate power measurement to your steed.

This non-drive side crank arm is exactly the same as the non-power Dura-Ace 9100 arm you currently have, just make sure you order the right length, with a Stages power meter affixed to its inner surface. Tucked inside this little pod, strain gauges and an updated Gen 3 accelerometer measure torsional force and rotation speed to calculate power and deliver this data to your head unit via updated Bluetooth LE or ANT+ radios with a 6-time improvement in transmission strength. These measurements come with a claimed accuracy of +/- 1.5%, which is very much in-line with the best power meters on the market.

The meter also incorporates Stage's Active Temperature Compensation (ATC), which compensates for the natural expansion and contraction of the strain gauges by adjusting the readings depending on external temperature. ATC accounts for those temperature changes without requiring you to stop pedaling in order to zero the system. Overall, the power meter adds less than 15g to the crank, which is a tiny tradeoff for its ability to capture power information as it transfers from the pedals into the drivetrain. A simple coin-cell battery and wireless firmware downloads make this power meter easy to service and keep up to date.

  • A Dura-Ace 9100 left crankarm with power measuring capability
  • Measures power with an impressive +/-1.5% accuracy
  • Active Temperature Compensation accommodates changing temperatures
  • Updated accelerometer measures cadence
  • Improved wireless communication boosts the signal strength
  • Pairs with Stages Power App for firmware updates and zero resets
  • 200+ hour battery life with removable CR2032 coin-cell battery
  • Compatible with cranksets that have 10mm of clearance from chainstay

Tech Specs
Arm Materialaluminum
Arm Length165, 167.5, 170, 172.5, 175mm
Spindle24mm
Compatible ComponentsShimano 11-spd road
Recommended Usecycling
Manufacturer Warranty1 year
Weight

Actual Weight

Black, 170mm
184g
6.49oz
Black, 172.5mm
187g
6.60oz

Claimed Weight

Claimed weights are provided by the vendor.

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[power meter] 0.5oz
15g

Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

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