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  1. #1
    crashhard's Avatar
    Join Date
    Jul 2007
    Philly PA, Wildwood NJ, Indialantic FL

    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
    Join Date
    Aug 2007
    Bonita Springs, Florida, United States
    TTT for a killer seller

  3. #3
    zx11rider's Avatar
    Join Date
    Jun 2009
    Cape Coral
    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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