Originally Posted by Evolution Racewerks
True, however the Evo and STI with the 4 piston caliper were also made by Brembo as well.
Now I'm not saying that it's not the caliper issue, it might end up being so. However, to properly figure out what has gone wrong, we need to look at the situation objectively instead of assuming things and start pointing fingers. By doing so, we may not look at all the variables and miss the solution.
I have NEVER seen caliper pistons come apart like this, very puzzling mystery.
evos' owner never had problem with caliper piston.maybe because the piston is steel.