Killer B DIY Holy Header Rotated Turbo Subaru WRX 2002-2014 / STI 2004-2021 | HH-DIY vendor_Cosmis Wheels service your vehicle in a

service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle

All necessary hardware is included for a complete and clean installation

Comp1 Clutch brings to their customers the finest materials

This clutch offers comparable torque capacity as Stage 1

2-litre four-cylinder engines

Killer B DIY Holy Header Rotated Turbo Subaru WRX 2002-2014 / STI 2004-2021 | HH-DIY vendor_Cosmis Wheels service your vehicle in aPart #: HH DIY The 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