I would have never guessed. I just bought an 06 with the R22's thinking they were some kind of street legal baffle. I called Yosh today to double check that I could put the TRC baffle in with no problem. The girl told me they are exactly the same. I have had Yosh on 5 of my six bikes. They were never one of the louder pipes but these R22's are so quiet. As soon as I can post in the "trade" section, I am going to see if anyone is interested. The pipes are really nice but I would like to try something different, hopefully some carbon fiber. It would look much better with the bike.