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I had some minor squeaking with my brakes and it was driving me nuts. I had plenty of pad, it was just they were cheap-o replacement from the previous owner. I picked up some new pads and when I took of the caliper the piston was partially crumbling! It appeared as if it were partially made of plastic! Is that the case? At first I thought it was ceramic, but nope. Needless to say I threw those out and bought some quality replacements.
I was shocked. Just curious if anyone else has come across it.
 

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The caliper piston should be ceramic, they're not plastic. They crumble from overheating, either the pistons are freezing in the caliper or the pads are freezing in the bracket. Where rust is an issue I see pads frozen in the bracket on nearly every super duty
 

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I broke one too. It doesn't take much. I hate the design. Nothing like busting a caliper at 9:45 pm. Needless to say that was a fast trip to the parts store (open until 10), as we had a trip the next AM.


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