Shimano Ultegra SL RD 6600 Rear Derailleur Short Cage
Shimano Ultegra SL Rear Derailleur. Enhanced cable pull mechanism and wider gear ratio optimized for compact and standard gearing combinations Compatible with older 66006603SL 10 speed systems Wide link design increases rigidity, precision, and service life 4 flourine coated link pivot bushings minimize friction for faster shifts Aluminum construction with 11 tooth upperlower pulleys and a sealed bearing tension pulley 190200g
