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  1. #1

    2005 FXHO Oversize Pistons

    Can anyone tell me the Yamaha part numbers for oversized pistons for a 2005 FXHO. Currently rebuilding one with high hours and would prefer to do a rebore. Not list on yamaha site.

    Thanks in advance


  2. #2
    Anyone,

    Can oversize be sourced for this ski.

  3. #3
    TennR600's Avatar
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    it seems like i have seen pro x making os pistons for this engine. it does not look like yamaha offers them. dont know if a r1 mcy piston will work. they have differant numbers and most likley will run differant piston to cylinder clearance.

  4. #4
    Its better to burn out than fade away christian79's Avatar
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    The R1 piston is 1MM larger in diameter. Other than that they seem to be interchangeable.

    Quote Originally Posted by TennR600 View Post
    it seems like i have seen pro x making os pistons for this engine. it does not look like yamaha offers them. dont know if a r1 mcy piston will work. they have differant numbers and most likley will run differant piston to cylinder clearance.

  5. #5
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by steelroe View Post
    Can anyone tell me the Yamaha part numbers for oversized pistons for a 2005 FXHO. Currently rebuilding one with high hours and would prefer to do a rebore. Not list on yamaha site.

    Thanks in advance
    Item 3 on this page in the online store. .50mm oversize
    http://partsfinder.onlinemicrofiche....e=13&A=126&B=4

  6. #6
    32 Valves To Love! Racecar_Dave's Avatar
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    any piston company can make you any piston you want

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