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Perrin E4-Series Equal Length Headers - 2002-2014 WRX / 2004-2021 STI


NOTE: 2.0L WRX engines will need the 2.5L STI oil pan install kit.

The PERRIN E4 Equal Length Headers is one of the latest and greatest creations that feature newly designed collectors to allow for smoother flow which means even more improved performance and structural rigidity. Because of the revision on the collectors, this header produces a balanced exhaust flow from the heads which means improved spool, and more horsepower. . . Show More >

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