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Old 10-06-2012, 12:45 PM   #9
Gnarly Adventurer
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Joined: Jan 2008
Oddometer: 376
Originally Posted by mudgepondexpress View Post
If you were in the states I would say it is a MAC. Had the exact muffler/baffle on my CM400 exhaust. As said previously....hideously loud, kind of a sharp buzz sound at high rpms...only performance increase was a severe loss in weight (boy were they thin).

Haha I have a MAC 2-1 on my XS500, not thrilled either. Compared to my old 2-1 (not sure of brand, Hooker? S&S?) the MAC had awful ground clearance, was heavier, and was more restrictive yet LOUDER. I pulled the baffle and fabricated a straight flow core wrapped in fiberglass packing, a huge improvement in sound (quieter and less blatty) and power. The only reason i dumped my old 2-1 was because it was rusting through in multiple places and I was sick of clamping on old beer cans
1977 Yamaha XS500C cross country veteran
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