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2-into-1 exhaust

  1. B

    Mac 2 into 1 race header and muffler

    Good day all... Has anyone used the Mac 2 in1 racing header and muffler system...model AC6-0903... Thinking of adding it to my R75/6... (Slowly turning it into a cafe).... I know I would have to change carburetor settings if not changing the jets... So I seek the wisdom of the brotherhood of...
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