If I remember right the KLX300 muffler flows pretty good but the header is restricted quite abit. So I'm thinking about putting a larger header on it.

If I go that route what are my options and where can they be purchased?

Or I'm wondering if the stock header has any significant narrowing in it that could be dremeled out? If so, have some of you done it and did you notice any difference?

Please post up. Thanks!!