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Thread: 1390 Head

  1. #1

    Join Date
    Apr 2006
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    1390 Head

    1390 87mm head, I bought this a while back and never used it. Looks like maybe a group K head, compression would probably be in the 135-145 psi range, great for pump gas.

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    Last edited by Ronn25; 09-28-2013 at 09:28 AM.


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