| Full-carbon unidirectional-multidirectional cranks: stiffness, weight savings and long fatigue life- Ultra-Shift light-alloy chainrings: weight savings, increased stiffness- Ultra-Shift hard-anodizing treatment: increased resistance to wear, corrosion-proof- Ultra-Shift chainrings synchronization: improved shifting precision and quickness- Ultra-Shift specialized shifting sectors on outer chainrings: improved shifting precision, quickness and efficiency- Ultra-Shift asymmetric teeth profile on inner chainrings: shifting and chain crossing optimization- Light-alloy nuts and bolts: greater weight savings- 8 pins on the large chainring: faster shifting- Ultra-Torque bb system: lightness, stiffness, simplified assembly and maintenance- Weight: 739g |
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