Put the semi-metallics on my XOs after cleaning the rotors and then bedded them in. The previous squeal was replaced by turkey gobble and shudder. It was a cheap gamble and others have had success with them.
Just testing them out. So far, ok. They stop my bike. I used to have shudder in rear from the stock Avid pads but that is gone now. I may have traded stopping power however. Front so far is silent and working well. Need few more rides and various conditions to truly assess.
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