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The newly designed cranks offer a perfect balance between lightness and efficiency. The crank, in hollow forged aluminum, is anodized, with an elegant glossy black finish that gives it a high-end aesthetic. Resin ribs on the back of the
chainrings feature SHIMANO 105's unique structural design that offers low weight with precise shifting performance.
- Optimal balance between stiffness, strength, weight and rotational efficiency.
br> - HOLLOWTECH II structure reduces weight while maintaining strength, for better power transfer
- Q factor: 148 mm
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