zilla wrote on 07/02/08 at 20:43:19:bill67 wrote on 07/02/08 at 15:03:02: 1 3/4
So just to clarify, the muffler would be a 1 3/4" I.D?
The stock OEM muffler is actually a metric size and fits over a pipe with a 1 3/4" OD loosely.
I could not use the Stock muffler gasket on my Harley Dyna muffler, it was too fat. The Harley muffler fits on a peice of 1 3/4" muffler pipe I got at Auto-Zone very nicely.... but I needed a thin sheet of Aluminun on the Suzuki header to fill the gap (Aluminum was thicker that paper but thinner that a credit card)
So..... stock header pipe is real close to 1 3/4" OD but is smidgen smaller. The Stock Muffler is bigger than 1 3/4" ID because it uses a gasket.
If you are replacing the header, and want to use the stock muffler (but why?
) you may need to do something to the stock gasket to fit over the 1 3/4" OD pipe (sandpaper???)