"Each of the cylinder heads are proudly Made in the USA and must pass a strict durability test prior to being put on the market. Trick Flow helps racers save money and have proven performance for their vehicle that is dyno-tested and proven."
From this article:
International Hot Rod Association - Trick Flow’s New Cylinder Heads Provides “Ultimate Bolt-on Performance”
They say made in the USA, not just assembled. That tells me it's cast in the states, but who knows.
