Killer B Equal Length 4-1 Holy Header EJ Series, HH4-1
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Description
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.
WARNING: Not for sale or street use in CA & CARB states.
Vehicle Fitment for Killer B Equal Length 4-1 Holy Header EJ Series:
- 2008 Subaru Forester Sports 2.5 XT H4.2458cc
- 2004 Subaru Forester XT H4.2458cc
- 2005 Subaru Forester XT H4.2458cc
- 2009 Subaru Forester XT H4.2458cc
- 2006 Subaru Forester XT Limited H4.2458cc
- 2007 Subaru Forester XT Limited H4.2458cc
- 2008 Subaru Forester XT Limited H4.2458cc
- 2009 Subaru Forester XT Limited H4.2458cc
- 2010 Subaru Forester XT Limited H4.2458cc
- 2005 Subaru Forester XT Premium H4.2458cc
- 2010 Subaru Forester XT Premium H4.2458cc
- 2011 Subaru Forester XT Premium H4.2458cc
- 2012 Subaru Forester XT Premium H4.2458cc
- 2013 Subaru Forester XT Premium H4.2458cc
- 2011 Subaru Forester XT Touring H4.2458cc
- 2012 Subaru Forester XT Touring H4.2458cc
- 2013 Subaru Forester XT Touring H4.2458cc
- 2002 Subaru Impreza WRX H4.1994cc
- 2003 Subaru Impreza WRX H4.1994cc
- 2004 Subaru Impreza WRX H4.1994cc
- 2005 Subaru Impreza WRX H4.1994cc
- 2006 Subaru Impreza WRX H4.2458cc
- 2007 Subaru Impreza WRX H4.2458cc
- 2006 Subaru Impreza WRX Limited H4.2458cc
- 2007 Subaru Impreza WRX Limited H4.2458cc
- 2004 Subaru Impreza WRX STI H4.2458cc
- 2005 Subaru Impreza WRX STI H4.2458cc
- 2006 Subaru Impreza WRX STI H4.2458cc
- 2007 Subaru Impreza WRX STI H4.2458cc
- 2008 Subaru Impreza WRX STI H4.2458cc
- 2009 Subaru Impreza WRX STI H4.2458cc
- 2010 Subaru Impreza WRX STI H4.2458cc
- 2011 Subaru Impreza WRX STI H4.2458cc
- 2012 Subaru Impreza WRX STI H4.2458cc
- 2013 Subaru Impreza WRX STI H4.2458cc
- 2014 Subaru Impreza WRX STI H4.2458cc
- 2007 Subaru Impreza WRX STI Limited H4.2458cc
- 2011 Subaru Impreza WRX STI Limited H4.2458cc
- 2012 Subaru Impreza WRX STI Limited H4.2458cc
- 2013 Subaru Impreza WRX STI Limited H4.2458cc
- 2014 Subaru Impreza WRX STI Limited H4.2458cc
- 2010 Subaru Impreza WRX STI Special Edition H4.2458cc
- 2006 Subaru Impreza WRX TR H4.2458cc
- 2007 Subaru Impreza WRX TR H4.2458cc
- 2005 Subaru Legacy GT H4.2458cc
- 2006 Subaru Legacy GT H4.2458cc
- 2005 Subaru Legacy GT Limited H4.2458cc
- 2007 Subaru Legacy GT Limited H4.2458cc
- 2008 Subaru Legacy GT Limited H4.2458cc
- 2009 Subaru Legacy GT Limited H4.2458cc
- 2006 Subaru Legacy GT spec.B H4.2458cc
- 2007 Subaru Legacy GT spec.B H4.2458cc
- 2008 Subaru Legacy GT spec.B H4.2458cc
- 2009 Subaru Legacy GT spec.B H4.2458cc
- 2005 Subaru Outback XT H4.2458cc
- 2006 Subaru Outback XT H4.2458cc
- 2005 Subaru Outback XT Limited H4.2458cc
- 2006 Subaru Outback XT Limited H4.2458cc
- 2007 Subaru Outback XT Limited H4.2458cc
- 2008 Subaru Outback XT Limited H4.2458cc
- 2009 Subaru Outback XT Limited H4.2458cc
- 2015 Subaru WRX STI Base H4.2458cc
- 2016 Subaru WRX STI Base H4.2458cc
- 2015 Subaru WRX STI Launch Edition H4.2458cc
- 2015 Subaru WRX STI Limited H4.2458cc
- 2016 Subaru WRX STI Limited H4.2458cc
- 2016 Subaru WRX STI Series.HyperBlue H4.2458cc
Additional information
- Package Weight
- 18 lbs
- Package Dimensions
- 27 × 16 × 10 in
- MPN
HH4-1
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