Full-carbon unidirectional multidirectional - stiffness, weight savings and long fatigue life
hollow cranks (Ultra-HollowTM Structure) - lower weight with same stiffness and 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 asymmetric teeth profile on inner chainrings - shifting and chain crossing optimization
Triple gaskets low-friction bearing seals - good insulation with the highest smoothness
Light-alloy nuts and bolts - greater weight savings
8 pins on the large chainring - faster shifting
Ultra-Shift specialized shifting sectors on outer chainrings - improved shifting precision, quickness and efficiency
Weight - 695 g
Available in two ring sizes 39-52T or 39-53T.
Crank lengths available: 170mm, 172mm, 175mm, 177.5mm or 180mm.

Click on thumbnails to see larger images