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As for re-jetting, there's really no way to know ahead of time. I switched from my stock SE to a velocity stack thinking I would have to re-jet, but after checking my plugs many times it turns out it was running fine with that a/f mixture. Unless you are talking about a real performance intake, I don't think the amount of air being drawn in changes all that much. I don't think you will have to re-jet, but I could be wrong.
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Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
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Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
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Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
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