Shimano CUES FD-U4000-L Front Derailleur - 9/10-Speed Double Top-Swing Low Clamp Mount 36/40t Max BLK/SilverShimano CUES FD U4000 L Front Derailleur 9 10 Speed Double Top Swing Low Clamp Mount 36 40t Max Black Silver. Exceptional front shifting performance for large wheel mountain bikes. Tackle trails with this Shimano CUES FD U4000 front derailleurs smooth operation and outstanding durability. Its extra wide range front double gearing and versatile 2x10 9 speed design give you the freedom to explore. Smooth and quiet shifting on and off the trail Provides