It is one of the essential components - together with the chainrings and the cassette - of the exceptional Record™ 2011 groupset.

 for double standard and CT™ crankset - capacity 16 max. chainring 54  min. chainring 34 - composite and aluminum fork - M-brace™ body - Even-O™ clamp - Z-shape™ lower cage - antifriction treatment

Ultra-Shift™ carbon cage
 Thanks to its graduated curvature, shifting is fast and extremely precise
 
Z-Shape™ inner cage
 Maximum cage force and rigidity when shifting
 
Surface treatment
 Reduces friction and prolongs the life of the component
 
Exclusive M-Brace™ Campagnolo® geometry derailleur
 High system rigidity and shifting precision