Shimano Ultegra FC-R8100 Crankset - 172.5mm, 50/34t, 12-Speed
The ULTEGRA FC-R8100 crank offers various arm lengths from 160 to 175 mm for improved fit and performance, maintaining Shimano's front shifting efficiency.
- The description claims the crank improves fit and performance for smaller riders, triathletes, and those with specific biomechanical requirements.
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