The SRAM XX Direct Mount Front Derailleur uses a low profile design, created from the ground up specifically for 2 x 10. It's a critical part of the XX shifting experience: & the fastest front shift ever. Like the rest of the range, no expense has been spared to ensure that you receive the optimum shifting experience, this derailleur is dripping with high quality materials that will keep your gear changes crisp & smooth for years to come. Looking for ultimate shifting experience? You've just found it. The Exact Actuation system uses a 1:1 actuation ratio (shifter cable travel: derailleur movement) for 10 speed shifting. This Exact Actuation helps to simplify & stabilize the uneasy act of balancing rear derailleur hanger design, tight cog spacing & exact cable tension. The result: the easiest index shifting system to set up, & it stays that way.