Killer B EL 4-1 Holy Header/Up-Pipe - w/ SwainTech Coating & EGT Bung - 2004-2021 Subaru STI / 2002-2014 WRX, 2004-2013 Forester XT / 2004-2009 Outback XT / 2004-2009 Legacy GT Cobb Accessports especially at higher horsepower levels

especially at higher horsepower levels

Designed to fit most standard valve stems

Description: HD/Race Rigid 6 Pad

Wrap yourself in HKS luxury and honor its legacy with each use of the HKS Big Towel Oil Color

Bilstein B12 Pro Coilover Kit

Killer B EL 4-1 Holy Header/Up-Pipe - w/ SwainTech Coating & EGT Bung - 2004-2021 Subaru STI / 2002-2014 WRX, 2004-2013 Forester XT / 2004-2009 Outback XT / 2004-2009 Legacy GT Cobb Accessports especially at higher horsepower levelsKiller B Motorsport 321 Stainless Holy Header Up Pipe The Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine optimal design to increase power as much as possible throughout the rev range. Short as possible primaries with a single secondary decrease header volume significantly, allowing exhaust gas pressure to quickly build. Symmetrical 4 1 design maintains high and consistent exhaust velocity