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Thread: Rebuilt 400ex

  1. 11-02-2007, 01:27 PM #1
    rooster_20's Avatar
    rooster_20
    rooster_20 is offline Senior Member
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    Rebuilt 400ex

    Ok I just got my 400 rebuilt, bored to a 86mm piston and I was wondering what kind of hp im getting I know it wont be as much as a 440 but what do you all think? And was it worth the hastle of boring it that small...
    Rooster#20
    2002 406ex
    dyno jet kit
    wb e-series slip on
    wb powerfilter
    black handgaurds
    ebc brakes
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  2. 01-18-2008, 07:40 AM #2
    TheNewn
    TheNewn is offline Registered User
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    ...You have to say what mods you have along with it...Whats the compression of the piston? Cams? Pipe? is your sig all that there is?
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