Exceptional front shifting performance for large-wheel mountain bikes. Tackle trails with this Shimano CUES FD-U4000 front derailleur's 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 and extra-wide range with front double
• Offers wider tire clearance
• Works with 48.8 - 51.8mm chainlines
• 64-69 degree chainstay angle
• Clamp for 34.9mm post (Comes with adapters for use with 28.6mm and 31.8mm posts