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Utilizes coil springs located between the pressure rings to develop initial torque and features full engagement during acceleration and partially under deceleration
Valving will increase in stiffness from lowest to highest depending on your driving style
Provides race-inspired looks for your daily driver or weekend show car
ETS Titanium Top Mount Charge Pipe Burned Finish
Killer B Motorsport 4-1 Holy Header DIY Rotated - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI) Suspension>Control Arms Utilizes coil springs located betweenSymmetrical 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
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