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Thread: Pistion ?

  1. #1
    Join Date
    Dec 2001
    Location
    Dracut MA
    Posts
    1,528

    Pistion ?

    hey. i knwo this is a really dumb question. but i blew my top end the other day and i was wondering if anyone could help me with what bore its on. the guy i bought it from said he doesnt know. its a wiseco prolite piston and the number on top is 526mo6725 and i was wondering if that meant it was 67.25mm or if anyone knew what it meant. thanks
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  2. #2
    Join Date
    Dec 2002
    Location
    Plattsburgh, NY
    Posts
    1,874
    measure the piston.... if your not sure about the numbers.


    and measure the bore.
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  3. #3
    Join Date
    Aug 2003
    Location
    Morris, IL
    Posts
    318

    wiseco

    The number you listed is for a 67.25mm piston. It is the earlier (85-86) style.

  4. #4
    Join Date
    Oct 2004
    Location
    Lafayette, IN
    Posts
    157

    ANSWER

    You are right, the size is 67.25, you have 2 piston sizes left. I had an an 86 R that had that piston in it till i got a ESR bigbore. You can order the next size which is 526mo6750 for 121.99. Good luck man.
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