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Continue to Chat40年ぶりにディスクブレーキの構造が変わった! https://blog.40ch.net/2018/06/14/the-structure-of-the-disc-brake-has-changed-for-the-first-time-in-40-years/
40年ぶりにディスクブレーキの構造が変わった! https://blog.40ch.net/2018/06/14/the-structure-of-the-disc-brake-has-changed-for-the-first-time-in-40-years/