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  1. #1
    crashhard's Avatar
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    Jul 2007
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    FS: GroupK 1390 big bore $1850

    yea that price is right. here is some info.

    Group K 1390. previous owner recently replaced the crank about 50 hours ago and did the rings. I never got it tuned to run full speed but the power was there. I was going by the forum and thinking I would see a higher speed number but I realized that goup k has a milder port then lowell. I emailed lowell and it was about 450 to have the cylinders done to give it the extra mph. It ran 73-74 bogging and cavitating.

    will include the carbs, one has epoxy on it because one body cracked where the one bolt goes in. The carbs need to be rejetted without a doubt. But this is a steal!!!!!!!!!!

    no exhaust manifold, that is tapped for the advent data tach.
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  2. #2
    L Carlson's Avatar
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    Aug 2007
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    TTT for a killer seller

  3. #3
    zx11rider's Avatar
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    Jun 2009
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    Cape Coral
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    Now this is what you guys looking at the SBT motors should get instead, this will bolt right in and It will wake your ski up

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