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  • I didn't actually notice. Interesting gears.

    I wonder if that colourful coating helps or hinders performance or is so marginal as to be irrelevant. Also how durable is it? Is it more than a coating?

  • Is it a coating or a heat treatment for hardening or something? Looks a lot like when you really hammer brake rotors going downhill and get them good and hot.

  • Yeah, I thought maybe some kind of oil bath that gets zapped onto the metal. Someone said something about titanium changing colour like that under heat.

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