Câmbio dianteiro (2x11 velocidades)
- Quick and smooth front shifting under high pedaling torque
- Programmed chainguide control
- SHIMANO SYNCHRONIZED SHIFT
- Redesigned to fit a wider gear pitch without sacrificing shifting performance
- Shorter rear-center length (410 mm) with 135 mm O.L.D.
- System communication with rear derailleur, combined with programmed chainguide control means minimal chance of chain drop