| 摘要 |
PROBLEM TO BE SOLVED: To provide structure for a tail pipe part of a muffler with excellent design without generating whizzing sound when reducing engine speed. SOLUTION: A tail pipe 7 is formed of a straight tube pipe main body 7 and is formed into a double pipe by covering an outer peripheral surface of an exhaust port side of the pipe main body 7a with an outside pipe 7b having a slightly large diameter. An end part of the outside pipe 7b is projected slightly outward from an end of the exhaust port of the pipe main body 7a.
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