I've been looking at full exhausts and see a lot of places list s2r800 and S4R under the same part number... are the configurations and diameters for the piping the same? I think the mufflers are interchangable, but dont know about the header
I could be wrong, but I don't think they could possibly be the same.
S2R is a 2V and the S4R is a 4V. The connection to the head is completely different as are the tube diameter requirements for the different engines.
hmmm.. never thought about that, good point
Slipons are the same.
Headers are not.
<2006 everything AFTER the headers should fit.