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Personally, I don't care for the XR-1 muffler. Lately, everything has been magnaflow with no issues and lifetime warranties. Use a thicker 14ga exhaust tubing with an RB presilencer and good magnaflow performance muffler and it should be plenty quiet for track officials. I know the 14ga is heavier, but an NA rotary with thin exhaust is going to get noticed...
Everything else looks great BTW.... should be a great ride when your done.
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