I was gonna say to use a high flow air filter, I run K&N, but they need a re-map with the filter and exhaust. My bike came with a 520 conversion on it and I dont really do much more than a few hundred highway miles at a time or city commuting, no track days so far, so I cant speak for how they hold up to a little ripping on them. I did switch to a Vortex rear sprocket, you will really want to save any weight you can. I will get you some links in a bit.
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Cry Havok! And let slip the hogs of war!
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