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09 big bore kit

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i did a cppiston and a crower victory cam and remapp from eddie.and my bike runs awesome love the power and it pulls so nice.

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Not exactly the same thing, but I have a BB kit on a 06 CRF 450 that Travis at Thumper racing installed. Very smooth and controllable power delivery but when you twist it that bike moves! I know the 09 has a mid range surge due to the EFI, but I think he also maps the bike to take that out. The BB kits on the carb bikes work very well and I think on a properly mapped bike they would work even better.

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