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Symmetrical 4-1 design maintains consistent and high velocity exhaust gas flow as RPMs rise
and turn up higher boost pressures
L GRADE : L/RHD WAGON 1990
Not CARB Legal - Not for sale or use in California or Other CARB States
2016 Subaru WRX STI Series
Outfront Motorsports 575 Complete Cylinder Head Package B25 Heads Oiling Symmetrical 4-1 design maintains consistentThe Outfront Motorsports 575 Cylinder Heads are the perfect entry level replacement heads if you had a failure requiring you to completely replace heads or if you just want brand new heads outright. These heads are a great option for your basic bolt on engines up to 575 BHP. The Outfront 575 Heads start with new OEM Genuine Subaru head castings. A multi angle valve job is performed as well as a fresh resurface. The heads go through multiple cleaning
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