Killer B DIY Holy Header Rotated Turbo Subaru WRX 2002-2014 / STI 2004-2021 | HH-DIY vendor_Wheel Mate Fast Motorsports has solved the

Fast Motorsports has solved the problem for us by producing this heavy duty

Segmented Kevlar friction disc for durability and smooth engagement

Spring Rates: (F) 8kg/mm (R) 6kg/mm

Part Number: 06052-HDKV

Killer B DIY Holy Header Rotated Turbo Subaru WRX 2002-2014 / STI 2004-2021 | HH-DIY vendor_Wheel Mate Fast Motorsports has solved thePart #: 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