Baffle

[acme]

Does MAC make a so-called straight-thru performance muffler for their 4-1 pipe? I called MAC, but they haven't returned my call.
Does anybody have a straight-thru MAC baffle, I never seen one.

Thanks,
Alan

[rustybronco]

like this maybe?

http://www.crc2onlinecatalog.com/baffles.htm

[Steve]

Can't tell you where to get one, but I have what I believe is a MAC pipe on the 650L that's on the back porch. The baffle on that is about 10-12" long and has a perforated tube that goes straight through. Doesn't seem like it would make a lot of difference, but it does. Without the baffle in there, that little 650 has a might deep rumble and could be mistaken for a liter-bike. Haven't put in earplugs to take it out on the street, though, it's too loud for me just sitting in the driveway.

The pipe on #2 son's bike (you can see that one in my sig) is of unknown origin. Similar to a MAC, but the pipe is lower, more like a touring version. The baffle looks rather similar from the outside, but has a solid disk in the middle, which forces all the exhaust through the perforations and packing, into the outer chamber, then it has to go back through the packing and the perforations at the back half of the baffle to go out the exit at the rear. I like the sound on that pipe.

.

[acme]

Baffle

like this maybe?
http://www.crc2onlinecatalog.com/baffles.htm

No, i'm looking for a straight-thru baffle, similar to this, but different .
I never seen a MAC straight-thru, so maybe they don't..

[acme]

Baffle

like this maybe?
http://www.crc2onlinecatalog.com/baffles.htm

MAC does make a competition baffle, part# 009-0919 I found out. There's one on their site Don't know what it looks like, e-mailed them, maybe they will tell me what size it is