You've been mostly-dead all day.
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Not saying you should spend your $100. If isn't broke, don't fix it. But the reason Honda used cast iron guides over bronze is expense, not performance. It's significantly cheaper to use iron and it's much easier to work with in a production setting.MiniatureNinja said:the bronze guides aren't an upgrade anyway (He told me Honda used Iron for a reason) so I'm happy that I can save about $100 there.