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Grand Rock Universal 4" x 18" Internal Stack Muffler/Baffle

Slide-In, Straight through muffler helps reduce harsh exhaust tones.

Aluminized Steel

This item is designed to fit by first REMOVING your stack from the connection, setting the muffler in place, then set the stack back on top of the muffler. You can accomplish more exhaust muffling by squeezing/crimping the ends as well.

Grand Rock part number: IM-418

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