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  1. #1
    Cliff's Avatar
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    Question FX 140 cylinders

    I am trying to find out what type cylinders an 04 FX 140 has. It looks like yamaha offers .50mm oversize pistons but the cylinders look like nika-sil to me. I can't see a sleeve in it at all.




  2. #2
    volltrex's Avatar
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    The FXHO has steel bores......I would assume the 140 also has. Nikasil is more commonly used on 2 stroke motors.

  3. #3
    bex's Avatar
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    So my n00b question is, can you just drop in the oversize pistons or do you rebore the cylinders?

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