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6-pad spring-centered race disc features a spring center construction to properly clamp torsional vibration and to resist failure under harsh conditions
New exhaust gasket and hardware
The Yellowstuff pads are very unique in terms of being a very high-temp pad that contains the same type of compounds found in racing brake pads
Product Info Card
Killer B Motorsport 4-1 Holy Header 2-Bolt Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004-2021 STI) PERRINJUNE10 6-pad spring-centered race disc featuresSymmetrical 4 1 design maintains high and consistent exhaust velocity as RPMs rise. You can expect faster spool up time compared to long primary double secondary designs. A difference you will immediately notice in throttle response and the ability to hold more power higher into the revs. 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