Killer B EL 4-1 Holy Header/Up-Pipe - EGT Bung - 2004-2021 Subaru STI / 2002-2014 WRX, 2004-2013 Forester XT / 2004-2009 Outback XT / 2004-2009 Legacy GT Subaru-Outback-2025 The Jackson Racing Dual Radiator/Oil

The Jackson Racing Dual Radiator/Oil Cooler includes all necessary components for engine oil connections for a true plug and play solution

Weighs 25 lbs

Killer B Motorsport M18x1

that is over a minute

By switching the number of clutch plates in the unit

Killer B EL 4-1 Holy Header/Up-Pipe - EGT Bung - 2004-2021 Subaru STI / 2002-2014 WRX, 2004-2013 Forester XT / 2004-2009 Outback XT / 2004-2009 Legacy GT Subaru-Outback-2025 The Jackson Racing Dual Radiator/OilKiller 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