does anybody know what size the inlet
to my standard 99 TH magna muffler is.
Just off the top of your head. :roll:

2.25"-2.5"
Haydn

yeah ,I did the old piece of string around the pipe trick.
You know, measure the string then divide by PY (3.14).
It came out to 2.3 so I guess its 2.25.
Thanx

It should be 2.5inches on the muffler inlet...