Stages Power Meter Shimano Dura Ace FC-7900 172.5 Left Crank Arm Single Sided

$99 $199

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  • Estimated Delivery:Jul 10 - Jul 17

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This power meter crank arm is in excellent working condition. The crank arm shows very little wear. Minor scratches and rub marks. This came off a 10 speed Dura Ace 7900 crankset, but may also fit 10 speed Ultegra and Dura Ace/Ultegra 11 speed first generation. Please do your homework before ordering for these other fitments. I have not tried them. This is a single sided power meter. If you have balanced leg strength, it will give you very accurate power numbers. If you have a weak left leg (like me - bad knee) the reading is likely to be low. For instance my average power reading on a recent ride was 118 watts with this power meter, and with another bike with a dual sided meter on the same route at the same speed I got 135 watts. But if you only have one bike with a power meter and are just looking for repeatability, it's accurate enough to get the job done. 

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