Exceptional front shifting performance for large-wheel mountain bikes. Tackle trails with this Shimano CUES FD-U6000 front derailleurs smooth and quiet shifting. It is compatible with 2x11 and 2x10-speed drivetrains. ONLY Compatible with LINKGLIDE shifting system.Features-Clamp for 34.9mm post (Comes with adapters for use with 28.6mm and 31.8mm posts-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-ONLY Compatible with LINKGLIDE shifting systemItem Specifications-Double or Triple:Double-Drivetrain Speeds:10-Drivetrain Speeds:11-Crank-FD Type:Mountain Double-Derailleur Capacity:14-Front Derailleur Clamp:34.9 (1-3/8")-Front Derailleur Clamp:31.8 (1-1/4")-Front Derailleur Clamp:28.6 (1-1/8")-Front Derailleur Cable Pull:Front Pull-Front Der/Shifter Compatibility:Shimano Mountain-Max Ring (teeth):36-Max Ring (teeth):40-Front Derailleur Style:Side Swing