・Smooth, quiet gear changes on and off the track・SIDE SWING design offers smooth, efficient chainring changes・Larger tire clearance・Extra wide range of developments with dual 36-22D and 40-26D chainrings."Total capacity: 14DTackle the trails with the smooth operation and exceptional durability of this front derailleur. Its two chainrings with extra-wide development range and versatile design for 2x10/9 speeds give you the freedom to explore many routes.