Frequently Asked Questions

What are the “slits” on the header flanges?
JBA Headers feature ultra thick 3/8” laser cut flanges. On some of these flanges you will see that the bolt-holes have a “slit”. This “slit” is created during the laser cutting process. It is not there for heat expansion reasons and it doesn't have any effect on the bolts ability to stay tight.


 Last updated Thu, Sep 1 2016 11:06am

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