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(x2) Brand New Subaru OEM WRX FA20 Cylinder Head Castings
1997-2013 Subaru Forester EJ20/EJ25 Manual
On the EA888 Gen 3
Both end ports are machined with 8AN ORB (3/4-16 female) threads
Use different settings for economy
Armytrix High Performance Down Pipe Catted:Yes (200 CPSI Cat) (x2) Brand New Subaru OEMEnhance your vehicle by adding the ARMYTRIX exhaust system to increase power, reduce weight, and improve sound. This precision made performance system delivers more power, especially in the low and mid rev range, the effect on the sound is significant, adding a deep resonant sporty sound, but at the same time neutralizes the annoying frequencies in the most critical rpm range.