Gilera runner fxr 180 piston

Discussion in 'General Tuning' started by Matic1234, May 19, 2019.

  1. Matic1234

    Matic1234 Member

    Messages:
    51
    I have bored my cylinder because it had a few spots but i used the old original piston because it was still good. Now i want to change the piston but i dont know which one should i get because there are 4 different sizes (65.55, 65.56, 65.57, 65.58). How do i know which one should i get?
     
  2. Damjan

    Damjan Active Member

    Messages:
    153
    Rides:
    Baotian Falcon 50R
    You should check the original piston what type it is, then measure your cylinder.
     
  3. Matic1234

    Matic1234 Member

    Messages:
    51
    Original is 65.55 but i dont know how to measure the cylinder
     
  4. Damjan

    Damjan Active Member

    Messages:
    153
    Rides:
    Baotian Falcon 50R
    Find someone who has the right tools for it and they will measure it.
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  5. MARSH

    MARSH Whooooo!

    Messages:
    3,031
    Rides:
    Piaggio Typhoon
    You can't re-bore a nicasil barrel !
     
    milo2025 and Sam phantom like this.

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