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KB holy header clone
This looks to be a clone of the killer bee holy header, except 304ss vs 321. I am yet to install and tune, still running the ssi/kinugawa el header. All the welds appear to be good. I must admit, the main differences between the holy header and this one aside from the alloy used are 1) the mandrel bends don't appear to be true mandrel at all. There's noticeable i.d differences where the bends are. 2) the flanges are magnetic, meaning they aren't 304 and likely another 4 series alloy. Not a huge deal, but I am disappointed in the bends.
Tim · February 4, 2026
Returns accepted within 30 days





