Depth of Boyesen/Atomic 22 p-valve cover?

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Mar 30, 2001
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#1
How much deeper than the stock cover is the Boyesen or Atomic 22 powervalve cover for a 99 CR250? I read in a magazine that its 5mm but i wanted to make sure. My dad is going to make a deeper cover so we need to know how deep to make it. Thanks.