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Thread: bore question

  1. #1
    Join Date
    Oct 2004
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    bore question

    can i just bore out my 250ex and not have to replace anything else or do i have to do other stuff if i bore it out .how much power will i get from doing it .
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  2. #2
    Join Date
    Apr 2003
    Location
    Maryland
    Posts
    4,933

    Re: bore question

    Originally posted by hondaexrider
    can i just bore out my 250ex and not have to replace anything else or do i have to do other stuff if i bore it out .how much power will i get from doing it .
    , new piston and rings, probably a head gasket and base gasket, also. You will need to rejet, depending on how big you go.
    2007 yfz450
    2011 rancher fpm

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