[quote=The Morgan header pipe is 1 3/4" diameter so you can fit just about any Harley muffler to the header [/quote]
John,
My 2012 machine has 2" OD pipe coming out of the head (after the 1.875" reduce section right at the port), and was 2 1/2" OD after the cat, before I removed it, so is now 2".
Based on most of the exhaust calculators one finds online, 1 3/4" or 1 7/8" would make more sense for this engine.
BTW-when I had the exhaust off for fab/updates, I measured the actual port diameter of the head at right about 1.375".
Last edited by Bitsobrits; 27/07/19 03:19 AM.
