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    Killer B Equal Length 4-1 Holy Header 2 Bolt - Subaru WRX 02-14 / STI 04-18
    Purchase Killer B Equal Length 4-1 Holy Header 2 Bolt - Subaru WRX 02-14 / STI 04-18

    Killer B Equal Length 4-1 Holy Header 2 Bolt - Subaru WRX 02-14 / STI 04-18

    Part Number: KB-HH-2BOLT
    $1,299.48
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    Description

    Two-Bolt
    - Works with any 2-Bolt Up-Pipe, including rotated
    - Two-Bolt Reduced cost!
    - Up-Pipe not included

    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 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 compared to long primary/double secondary designs. A difference you will immediately notice in throttle/boost response and the ability to hold more power higher into the revs.
    Brand:Killer B
    MPN:HH-2BOLT
    MAKE:Subaru
    MODEL:WRX, WRX STi
    YEAR:2002-2014, 2004-2018