Power Cranks Ultegra 8000 Left Upgrade Blk 172.5

Specialized Power Cranks – Shimano Ultegra Upgrade Kit features:

• +/- 1.5% real-world accuracy tested on the WinMill and validated by the Locomotion Lab in Boulder, CO.
• Works with ANT+ and Bluetooth® devices.
• Easy set-up and diagnostics with the Specialized Power app. (iOS and Android versions available).
• Shimano 8000 generation Ultegra left-side power measurement.
• Right crankarm and chainring NOT included.
• Available in 170-175mm crankarm lengths.