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are gs650 pistons the same as gs750 pistons?

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    are gs650 pistons the same as gs750 pistons?

    says it all in the title really , just thinking about upping the cc on my 550 , was looking for a 650 top end but have had no luck finding at a good price(in the uk it seems a rare bike -the 650), just noticed that 750s are the same dia as 650s just a longer stroke for 750 , i need to know if the crown heights are near as i can mod easily to suit if they bigger plus the gudgeon pin(think in us you guy call this a wrist pin or some thing similar) is unknow, maybe someone here can shed the light

    #2
    I think you've got your figures mixed up Dan.

    The 750 has a 65mm bore.

    The 650 has a 62mm bore.

    Plenty of 650 parts on Ebay in the States. Just buy a set and get them shipped. The cheap price of the parts offsets the freight charged.

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