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Big bore kit

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Old Nov 11, 2017 | 01:07 PM
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Adel Nuseibeh's Avatar
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Default Big bore kit

Hi, I have a 2003 kawasaki kfx400, with a full leo vince exhaust system, k&n oil filter and k&n air filter. Im thinking of going for a big bore kit bur i would like to know what should i replace when replacing to a big bore kit?
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Old Nov 12, 2017 | 09:01 AM
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LT80's Avatar
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Welcome to the forums.
I'd contact a motor builder such as: Baldwin motorsports/Jannsen motorsports/Curtis sparks racing. These guys built a ton of these Suzuki's in the 400 days.
FYI: the 416/426 kits were the most dependable.
IMO, If you're looking for speed/power I'd stay stock and go with some porting and a cam.
 
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