I'm in the process of testing out the 5 year warranty with my bumper right now. (waiting to hear back from vendor) The one shown is a Triplus and is about 2 years old and as you can see, the chrome is failing on the top. Thousands of dots and a bit rough if you run your hand over it. Appears to be too thin of chrome as mentioned
Obviously not just a fluke as the front one (also made by Triplus) is looking the same way! It's over 4 years old but since I bought it from a different place, I still have to try getting a replacement for that one.
When they are new, they are primo looking but don't seem to last too long. My truck is daily driven but well taken care of.
I'm hoping they corrected this problem and I get 2 from the good batch this time.