I just replaced a front, 3 spd Shimano front road derailleur which was an old model prone to breakage, with a Microshift front derailleur. The Microshift works very well, I would not hesitate to purchase one again. Appears to be well made. Of course, with the temps here of late, my wife hasn't put miles on her bike. I know you're talking rear der., but if it's made as well, should be fine.