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BUILT- WRX-0302*
  • BUILT STG III WRX/STI Cylinder Heads
  • BUILT STG III WRX/STI Cylinder Heads


BUILT STG III WRX/STI Cylinder Heads BUILT Industries staged cylinder heads come from a long line of proven performance now for over ten years. With over three hundred Mitsubishi 4G63, Mitsubishi 4B11, Subaru WRX, Subaru WRX STI, Scion TC, and other sport compact cylinder heads under our belt we have the ability to be custom build to your specifications or choose from one of our three proven platforms. Unless otherwise specified all WRX or STI cylinder heads start as a brand new cores from Subaru, shim buckets and cam installation is available for an additional fee. The Stage III cylinder head gives you all of the features and benefits of the STG II head but includes extensive port work on both the intake and exhaust side for maximum air flow from a 1 mm over sized valve. If you want an oversized valve you have to run the STG III head in order for the proper port work to be done to maximize airflow for the oversized valve, just installing an over sized valve in your stock head will HURT airflow and power. This cylinder head is geared up for the big turbo cars, big HP, and big RPM's. All Stage III cylinder heads include: Your choice of 1 mm oversized valves Competition valve job Bowl blending Extensive intake and exhaust port work Upgraded dual or single springs Titanium retainers Surface to > 30 RA Professional assembly For those looking for the highest HP potential and understand your power band is likely from 5000 RPMs and up this is your cylinder head. Big lift cams encouraged! When you choose the option for us to install the camshafts you must also purchase the set you want from the website (or send them in to us). The price of $400.00 INCLUDES brand new buckets being installed!

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