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Coloring of the exhaust manifolds

851 Views 11 Replies 8 Participants Last post by  TimC
Can anyone give an explanation of why certain exhaust manifolds slowly become all golden shades like mine and certain others remain with the original chrome tone in the area under the bike? depends on what ? my motorbike is new, it has 5000km.
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Kewl. Metallurgy. I love learning new things.
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