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Thread: XB9 Oversized Pistons - PART NUMBER?

  1. #1
    Junior Member
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    Apr 2013
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    Anybody know if there is an OS piston for the XB9 and if so what the part number is? Looks like I got some bad info from my dealer and I ended up with 22246-04 +.010 pistons that are flat topped unlike my domed XB9 pistons. What do these pistons fit? Also where can I find a parts manual just for my bike???? 2007 XB9Sx??? Thanks

  2. #2
    Senior Member ich's Avatar
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    Oct 2010
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    wiseco k1738?

  3. #3
    Senior Member
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    Oct 2011
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    There are no OEM oversized XB pistons. You have to go aftermarket for any oversize.

  4. #4
    Senior Member squidbuellie's Avatar
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    There is not a stock oem kit but.....you can buy a 1250 big bore kit for you xb9....Also they sold you xb12 pistons, and here is the parts manual.
    http://www.opeiu391.org/pdf/buell-xb-parts/
    Good luck

  5. #5
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    Can I bore my stock cylider to 3.563 to match the 1050 piston? Hammer Performance said no?

  6. #6
    Senior Member squidbuellie's Avatar
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    It would make the cylinder walls to thin....



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