The Kingpin_SDK_121.zip file you have requested: Tools and Utilities / Kingpin SDK v1.21 for Windows/Linux - 1.54mb is not available. Perhaps try browsing all files for the game Kingpin: Life of Crime and upload any files you want to share or are missing. This is the only information we could locate:

(Linux requires addition package) ==============================================
KINGPIN: Life of Crime (TM) - SDK
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This is a bare-bones compilation of the tools necessary to
create user modifications to Kingpin.

We recommend you return to the download list and browse the links from there. If the problem persists, contact us with the details.

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