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Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
It mounts easily to USDM-drilled holes or molded JDM holes on 2015+ WRX/STI models
this set of four plugs is a smart upgrade for your turbocharged Subaru
Finish: Black anodized or coated for corrosion resistance
Flywheel Type: Streetlite
In true rally tradition
Killer B Motorsport 4-1 Holy Header Exhaust Manifold w/ V Band Upipe 2002-2014 WRX / 2004-2021 STI / 2004-2013 Forester XT / 2004-2009 Outback XT / 2004-2009 Legacy GT YMM_2005_Forester It mounts easily to USDM-drilledThe Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine optimal design to increase power in the mid to high RPM range. Short as possible primaries with a single secondary significantly decrease header volume allowing exhaust gas pressure to build quickly. Symmetrical 4 1 design maintains high and consistent exhaust velocity as RPMs rise. You can expect faster spool up time compared to long
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