Yoshi inserts

[Lucky 85]

yeah thanks busgo,after talking belzybob i realised that i should have got some with the r77,so i asked action suzuki for them and they gave them to me,. . suppose you never fitted yours.?
i think the r77 arent loud,but one day after 10 000-20 000klms they will be to loud.

The R77's I have on my Busa have done over 20,000klms and still sound the same in my opinion. I find them not to be too loud. Bartman and Outlaw have different cans to me and are way louder than mine.
Interesting facts about the inserts, does not make sense to me but I,m not an expert. I would like to compare sound one day when I meet some one with theirs in.