Many of you are already familiar with these strut inserts so I am not here to repeat how great they are. I wanted to tell you about how great the manufacturer is. They recently fully warrantied my 10 year old set that had about 100k miles. Now that's customer service! I had to prove that I purchased the original set from an authorized vendor, validate that I had the set and that they were failing. I sent them a couple of pictures on a Friday and the following Monday a new set was on my doorstep!