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  1. #1

    Join Date
    Sep 2005
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    Gp1300r, strange PRO X piston ??? Wrong rings maybe?

    Cylinder replated, go to install, piston fits. Piston with rings, Wont fit.
    Piston measured 83.91 at skirt, less at ring lands.
    Stamped pro-x, but rings dont look like oem style.
    Piston boss also looks different. Piston has machined diameter like a wiseco forged, not smooth like oem.
    They are copper colored and capture retaining pin different, new ring left, old ring right.
    Anyone seen this before?Click image for larger version. 

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  2. #2
    Happily Self-Employed WFO's Avatar
    Join Date
    Nov 2005
    Location
    Houston, Texas
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    ProX has been sending the wrong ring sets with there newer pistons here lately

    They are Wiseco rings and they are incorrect

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