Originally Posted by mattbibs
you should try the 4" exhaust!
Booming!!
I think Rick is referring the 3" bore as opposed to 2.5". There is no such thing as a 4" bore exhaust for RST's.
I have the 3" bore, 4" tailpipe and was also very surprised by the quietness of it. It's not quite so quiet now, but that was self-inflicted.
