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400ex jet kit

5119 Views 3 Replies 4 Participants Last post by  dr. feelgood
i have noticed that fmf and dynojet both offer a jet kit. any thoughts on which one is worth buying.
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Agree^^^^ you can save yourself alot of money and just buy jets. Rocky mountain atv has them really cheap. With a good pipe and K&N or UNI filter your main jet should be a 170 and 1/2 turn out on the pilot screw and no airbox lid.
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