No complaints so far. They seem pretty strong. Installed them about 4 months ago and drove around North America with a very heavy load. There are no complaints about the performance. Hopefully they have good shelf life. The time will show. Update October 2018: Well, one of the shocks failed the durability test. It's covered in oil, as is the axle underneath. No doubt the seal came out and is no good now. I drive my pickup very little. Very unfortunate that this shock only lasted about a year and a half and under 5000 miles before failing. Changed from 5 to 2 stars.
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