The sram x0 10 speed front derailleur sram x0 brings the right gear to your most heated trail battlesmdashany terrain and every time only x0 combines the highest level technology options with a style that matches you perfectly this fantastic sram x0 front derailleur is ready for cross country trail all mountain or down hill bringing 2x10 gearing to all types of mountain biking with the 2x10 you get the same amount of usable gears as the 3x9 system but with lighter weight faster front s