The Record rear derailleur is the symbol of the Record groupset & communicates an unarrestable competitive charge thanks to the dominant presence of carbon fibre. Every particular has been designed down to the smallest detail to obtain the maximum effectiveness. The Record rear derailleur ensures rapidity & precision in every situation. Available with a short or medium cage&44; to interface perfectly with classic & compact cranksets. Upper to lower pulley-axle: 55mm (short)&44; 72.5mm (medium) Composite outer plate Titanium hanger & pivot bolt Composite outer cage Weight: 184g (short)&44; 193g (medium)