The Shimano Ultegra FD-R8000 11 speed front derailleur double 28.6 / 31.8 mm - Band-On is designed to enhance your cycling experience with its advanced features. This front derailleur uses a toggle link construction that aligns with the natural force curve of your hand, making gear changes smoother and more intuitive. The Shimano Ultegra FD-R8000 11 speed front derailleur offers: Toggle link design for light action, requiring less effort at the end of the shifting stroke. Wide inner link for increased rigidity, improving front shifting performance, especially under heavy load. Forged wide link that cradles the axle pivot at both ends, ensuring a smooth shifting swing. Compatibility with wider gear pitch spacing on Shimano chainsets, maintaining excellent shifting performance on bikes with 135 / 142 mm O.L.D. Adjustable cable tension for precise tuning. Added frame support bolt for enhanced stability under load. This derailleur is a reliable choice for cyclists seeking improved performance and ease of use.