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  1. #1

    undersize bearings for ultra250x

    Have a 2007 250x that has thrown a rod bearing. Want to get the crank ground but cannot seem to locate undersize bearings. Are these even available


  2. #2
    Take the time to smile sirbreaksalot's Avatar
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    they are available threw GOOD engine reconditioners who take the sizes and cross reference them from another application....

    I have had it done twice..

  3. #3
    Any details of what bearings that were used. Here in Ireland No engine builder will go to the bother of cross ref.
    I need to try and sort myself.

  4. #4
    Take the time to smile sirbreaksalot's Avatar
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    It all depends on the finished size of the crank etc
    one time I remember 1 of the bearing came from a MG listing
    its not as simple of just use this bearing....

  5. #5
    nicjak's Avatar
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    i think you are fighting a losing battle as you really need your crank builder to do both, bearing sizing will depend on how much he grinds.

  6. #6
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    WE build them back up to take oem bearings, and it is fully nitrided.

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