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z650 pistons in gs 650?

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    z650 pistons in gs 650?

    does anyone know if z650 pistons are the same as gs650 pistons? only here in the uk z650's are easy to get hold of,, seems the gs650 is a rare beastie. happy to do slight mods as i'll be fitting them to a 550 ,

    #2
    Same folk (ART) made the pistons but unfortunately to make it difficult the gudgeon pins are different sizes - 16mm on the GS and 15mm on the Z. The Z pistons do drop in to CB750s pretty easily (no mods at all I believe) for a bit of an oomph.
    79 GS1000S
    79 GS1000S (another one)
    80 GSX750
    80 GS550
    80 CB650 cafe racer
    75 PC50 - the one with OHV and pedals...
    75 TS100 - being ridden (suicidally) by my father

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