While you may not NEED to rejet, it is certainly beneficial for power gain and for having the correct fuel mixture. Even though it is just a slip on, it expels exhaust gases much faster than the stock pipe (lots of restrictions for emissions rules).

 

i took the packing out of mine to, there is a thread on it too. but as stated i did the same and drilled out the rivets took all the packing out and put the baffle back in and re-riveted everything.. https://cbrforum.com/m_115633/tm.htm

 

I need to do something with my yoshi exhaust. Its getting a little loud for my tastes. Like the sound deadening material isn't doing the job. Happens with age i suppose?

 

Yup, metal baffle pipes just fatigue. Some pipes like DnD have fiberglass packing material that slowly gets burnt away till you're nothing but loud.

 

I've got a Yoshi slip on pipe on my bike, nothing at all to putting it on, sounds pretty good too, loud, but not too bad. I enjoy it.

 

Anyone have a Vance and Hines pipe? How do those sound?

 

For an F2/F3 I reallylike Micron. Nice pipe, good fit, you can get them in some sweet colors for a decent price. I just got full system that starts blue and fades to silver. Looks hot with my blue and white bike. Will post s shot when I'm done modding.