Drivers side lasted 5K miles before developing a loud squeak. Passenger side lasted 25K.

Good quality. Passenger side went out after 5 years of aggressive driving, this side also had a damper blow out from a large pothole. Allows for a lot of adjust-ability, you'll run into the chassis before you run out of positive adjustment (about 1.5 degrees). I'm at -2.4 with plenty of room to go in. It developed a very small amount of play but I replaced it as a precaution. Very easy to remove and replace.