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Thread: Question: compatability of using a 76-89 yz125 piston in a yt 125

  1. #1
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    Question: compatability of using a 76-89 yz125 piston in a yt 125

    Hello. I am in the process of considering several options of what I should or shouldn't use for my repair of an 80 YT 125. It needs a new piston.

    OEM kits are ridiculously expensive and are difficult to locate. I found some Wiseco kits on eBay, for like $85, but then I still would have to buy a top end gasket set. I am sort of on a tight budget as well.

    Just by out of curiousity I found a .pdf catalog of Wiseco pistons, I also noticed that the pistons for 1976 - 1989 Yamaha YZ 125s had the same bore and stroke, and were used in engines with equal displacements of YT 125s. Also the YZ pistons are like $30 cheaper too...

    I basically wanted to know if anyone had ever considered this as a feasible solution, or if this is not a valid method to solve my problem.

    Thanks,
    Robert Swinderman

  2. #2
    Mike_Ham_250R's Avatar
    Mike_Ham_250R is offline Even team-red-rider is cooler then me. Arm chair racerJust too addicted
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    Try it! :-)
    -Mike

  3. #3
    Mike_Ham_250R's Avatar
    Mike_Ham_250R is offline Even team-red-rider is cooler then me. Arm chair racerJust too addicted
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    I doubt it would work though..
    -Mike

  4. #4
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    The piston for the YZ More than likely has a Diffrent Skirt along with Pin height.....I would Think, You can call wiseco and ask tho, I would just bite the 85$ for a Wiseco Kit+gaskets on ebay...then 40$ for a bore.
    1985 Tri-Z-

    Quote Originally Posted by mywifeknowseverything
    Just hit the Freakin Gas and Hold on!!!!!

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