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Thread: 250r pistons, the bests and the worsts

  1. #1
    Join Date
    Feb 2006
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    Canada
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    250r pistons, the bests and the worsts

    I need a new piston and I'm wondering which ones are good and which ones to avoid. I saw on ebay an ART cast piston. It looks like it's made by sudco as well as JE and Vertex pistons. Are cast pistons good for a 250r? At 29.00 usd + shipping, I find it really cheap: http://cgi.ebay.com/ebaymotors/ws/eB...0576&rd=1&rd=1

    What about Pro-x, Wiseco and other pistons? Any expert in pistons in here?

    Thanks

  2. #2
    Join Date
    Aug 2005
    Location
    Portland Or
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    412
    Not much experience with em out side of OEM, but from what Ive heard on here, Wiseco or Pro-X are the way to go.
    "Always do sober what you said you'd do drunk. That will teach you to keep your mouth shut."-Ernest Hemmingway

  3. #3
    Join Date
    Jan 2006
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    conesus lake NY
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    pro x are a exact replacement for OEM if your not boreing!!
    If your boreing go with a wiseco there better.

  4. #4
    breastman569 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Feb 2005
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    Tucson & Mesa, Arizona
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    272
    i went with a weisco pro light for my R and i cant complain about it!
    1986 250R
    Ported Polished
    Paul Turner Head domed and milled
    Boyesen Rad Valve
    38mm carb
    Uni Air Box eliminator
    Full FMF Exhaust
    85 350X (getting there)
    86 250R (Roller/Parts Bike)
    85 Tri-Z (Parts Bike)
    85 NQ50 Spree (sick ass campus bike)
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  5. #5
    Join Date
    Apr 2006
    Location
    Crestview, Florida
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    2,429
    wsm are pretty good for the price . i run em in all my stuff. try seller jkwaterparts on ebay.

  6. #6
    Pete is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Dec 2003
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    Lino Lakes, MN
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    229
    ART is the stock 250R piston. I prefer Wiseco's myself.

  7. #7
    Join Date
    Jul 2004
    Location
    Ontario, Canada
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    124
    I have a wiseco in mine. Wiseco pistons expand a little more than the others so the need to be well warmed before givin er or they will cold seize. I cold seized a new rebuild on my jetski this spring with wisecos. Replaced them with pro x.

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