This is the SRAM 11-speed front derailleur to get regardless of what group you have because it is stiffer and has a slightly better shape than others. Front shifts will initiate quicker and finish slightly faster. Pairs just as well with Rival 22 and Force 22 as with Red, and feels more solid and less flexy in your hand. It comes with the limit screws set up to help align the derailleur using the guide notches. There are mechanical differences between Red (aka Red 22) and 10-speed Red that make this front derailleur much more effective, so don't confuse the 10-speed version with this one.
Had to replace my derailleur due to a crash. This is really the best one on the market. If you do not know how to align this derailleur, best to find somebody that does. It's not really that hard, but you do need to know what you are doing. Haven't missed a shift, or dropped a chain since the replacement. Highly recommend.