Reply To: 1957 Big Twin 35 Muffler Packing Material?

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May 7, 2021 at 8:31 pm #237953
frankr
Participant

    It was fiberglass. Like the Pink Panther stuff for walls. Lots of people just remove it. You won’t notice any difference in performance. Perhaps a bit louder if you have good ears.

    • This reply was modified 5 years, 6 months ago by frankr.