hey guys i have a 04 600rr just drilled out 2 3/8 holes into the first chamber as outlined in a recent article, it sounds better, just not enough, my question is has anyony drilled out these holes larger? and what is the sound quality.

 

bump

 

fvuck it i went 3/4 in. the bomb fvucck paying 400$ this is the shiznit beitch. thanks for the info.

 

Why are you drilling holes in your pipe? Did you know that you bike requires a specific amount of back pressure to maintain proper performance. If you want a louder exhaust, get a slip on. I recomment a Two Bros. Slip on.

 

Well I guess if you don't have the dough to by a new pipe, that's one way to do it! Personally I don't think I would do something like that, but I've heard of several people who have.

Has there been any difference in the performance of the bike?

 

Could alway try a Hot Dog exhaust, I had one on my XJ650, sounds good but looks pretty basic