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Thread: Piston thoughts

  1. #1
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    Piston thoughts

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ID:	247330 what do you guys think about this piston kit its the only one i can find made for a 1985 atc 125m

  2. #2
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
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    Doesn't say a brand or anything. I prefer OEM over anything personally.
    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R

  3. #3
    125Mmadness's Avatar
    125Mmadness is offline At The Back Of The Pack Arm chair racerFirst time rider
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    uhhhhhhh.... 54mm is NOT standard for the 84-85 125m, 55mm is. 54mm is the standard size for the 86-87 125m.
    here's a piston kit you could use to pep her up a bit
    https://www.ebay.com/itm/NOS-PISTON-...5Z48v9&vxp=mtr
    1985 ATC125M: Parts
    1985 ATC200S: 84 200S Bottem end, 200x Head, 200x Carb, S&S Cycle Exhaust, Wiseco 10.25:1 Piston, Reground Cam with About 1mm more lift(unknown specs).
    1988 TRX250X
    1983 ATC200E: Total Pile.


    "Bout Tree Fiddy" Master of Thy 22RE

  4. #4
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    Ive looked for oem i cant find one anywhere haha

  5. #5
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    Hm i wonder how much it would be for a place to bore the cylinder out . Ive never had it done before

  6. #6
    125Mmadness's Avatar
    125Mmadness is offline At The Back Of The Pack Arm chair racerFirst time rider
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    My machine shop charged me $65 when I rebuilt my old 125m, but from what i've heard that's more than the usual machine shop.
    1985 ATC125M: Parts
    1985 ATC200S: 84 200S Bottem end, 200x Head, 200x Carb, S&S Cycle Exhaust, Wiseco 10.25:1 Piston, Reground Cam with About 1mm more lift(unknown specs).
    1988 TRX250X
    1983 ATC200E: Total Pile.


    "Bout Tree Fiddy" Master of Thy 22RE

  7. #7
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    Ill have to check it out haha thank you

  8. #8
    125Mmadness's Avatar
    125Mmadness is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Your Welcome, just don't wait to long if you wanna buy that piston. They are quite rare so it might get bought out from under you. I snatched up the last one that was for sale on ebay the day it was posted.
    1985 ATC125M: Parts
    1985 ATC200S: 84 200S Bottem end, 200x Head, 200x Carb, S&S Cycle Exhaust, Wiseco 10.25:1 Piston, Reground Cam with About 1mm more lift(unknown specs).
    1988 TRX250X
    1983 ATC200E: Total Pile.


    "Bout Tree Fiddy" Master of Thy 22RE

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