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Reply to "New Master"

All aftermarket aluminum master cylinders that I'm aware of, are made with hard- anodized bores, so side-wear should not be a problem. But corrosion by the water that brake fluid absorbs could affect it. Incidently, this is no worse than waters effect on cast iron; brake fluid should be changed EVERY YEAR in both hydraulic clutches and in brake systems. It almost never is.... I don't believe any master cylinders are made off-center. Due to the way all clutch linkage povots, there may be more pressure on the bottom (or top) of the bore than elsewhere, but when measured with a precision micrometer, it turns out to be mere polishing of the bore. My aluminum clutch and brake masters have worked just fine for many years.
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