HH-DIY - Killer B Holy Header


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Part #: HH-DIY
Notes: Equal Length 4-1 Holy Header
w/ DIY Up-Pipe
Your Price: $1,404.00

This Item Also Available In

Part Number Price Notes & Specs
HH4-1 $1,548.00 Notes Equal Length 4-1 Holy Header
HH-EWG $1,916.00 Notes Equal Length 4-1 Holy Header
w/ EWG
HH-2BOLT $1,256.00 Notes Equal Length 4-1 Holy Header 2-Bolt
HH-LMM $1,459.00 Notes Equal Length 4-1 Holy Header Low Mount Manifold

All Fitments

SUBARU
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2004 - 2013 FORESTER SPORTS 2.5 XT
XT
XT LIMITED
XT PREMIUM
XT TOURING
ALL ALL ALL ALL ALL
2002 - 2007 IMPREZA WRX ALL ALL ALL ALL ALL
2004 - 2014 IMPREZA WRX STI
WRX STI LIMITED
WRX STI SPECIAL EDITION
ALL ALL ALL ALL ALL
2005 - 2009 LEGACY GT
GT LIMITED
GT SPEC.B
ALL ALL ALL ALL ALL
2005 - 2009 OUTBACK XT
XT LIMITED
ALL ALL ALL ALL ALL
2015 - 2016 WRX STI ALL ALL ALL ALL ALL ALL

Product 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.

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