SRAM XX 10 Speed (2x10) Front Derailleur - Direct Mount - 42T - Bottom PullSRAM XX 10 Speed (2x10) Front Derailleur Direct Mount 42T Bottom Pull It's a critical part of the XX shifting experience: the fastest front shift ever. Offered in a wide variety of clamp mount and direct mount options. X Glide technology incorporated into the chainrings and front derailleur means that front shifting has never been this crisp. By maximizing the number of perfectly aligned points between the large and the small chainrings, X Glide