- Thanks to the new design of the parallelogram, the rear derailleur is now lighter and more rigid for the most effective and fastest shifting. The design is derived directly from the 11x components with the oversized outer plate to provide greater rigidity to the entire system. The surface treatment protects it from corrosion and ensures that the Veloce rear derailleur maintains its performance over time. **Technical Specifications:** * Upper to lower pulley-axle: 55mm/ 75mm (medium cage) * Aluminium bodies * Rollers on bushings * Rollers in special rubber * Parallelogram with 11s geometry **Options:** * Medium cage blk/sil 260g * Short cage blk/sil 227g