When I bought my bike it came with a Yosh RS-1 slip-on, I don't hear much about the RS-1 but here everyone talking about the RS-3. Anyone know the diffeence between the two?

 

Yeah I saw a RS-1 on ebay and saw that you had one as well (in your sig)

I was wondering what it was myself, since I had never heard of it myself.

My guess is that it was the first generation of muffler cuz it looks older.....because then came the RS-3 and now they have the RS-5 (undertail) exhausts