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쉬는날이라 체인 스프라켓 드레일러 크랭크 청소했워,,

덤으로 ppf같은거 보호용으로 붙여놧엇는데 땟워,,

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깰끔,,,

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풀리 분해하다 발견했는데

위아래 풀리가 다 이래,,,

ㅇㄱ ㅋㄹㅇㅇㅇ??