Killer B Motorsport HH4-1 Equal Length 4-1 Holy Header

Killer B Motorsport
Killer B Motorsport HH4-1 Equal Length 4-1 Holy Header

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Part Number: HH4-1
Manufacturer: Killer B Motorsport
On Sale: $1,656.00

Availability:
7 New In Stock
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Product Note:

Equal Length 4-1 Holy Header

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.

Select Vehicle Above to Narrow Fitment Info!

Year Make Model Trim Engine Vehicle

Subaru

 

Forester

 

SPORTS 2.5 XT

 
ALL
 
Subaru
Forester
SPORTS 2.5 XT

ALL

Subaru

 

Forester

 

XT

 
ALL
 
Subaru
Forester
XT

ALL

Subaru

 

Forester

 

XT LIMITED

 
ALL
 
Subaru
Forester
XT LIMITED

ALL

Subaru

 

Forester

 

XT PREMIUM

 
ALL
 
Subaru
Forester
XT PREMIUM

ALL

Subaru

 

Forester

 

XT TOURING

 
ALL
 
Subaru
Forester
XT TOURING

ALL

Subaru

 

Impreza

 

WRX

 
ALL
 
Subaru
Impreza
WRX

ALL

Subaru

 

Impreza

 

WRX STI

 
ALL
 
Subaru
Impreza
WRX STI

ALL

Subaru

 

Impreza

 

WRX STI LIMITED

 
ALL
 
Subaru
Impreza
WRX STI LIMITED

ALL

Subaru

 

Impreza

 

WRX STI SPECIAL EDITION

 
ALL
 
Subaru
Impreza
WRX STI SPECIAL EDITION

ALL

Subaru

 

Legacy

 

GT

 
ALL
 
Subaru
Legacy
GT

ALL

Subaru

 

Legacy

 

GT LIMITED

 
ALL
 
Subaru
Legacy
GT LIMITED

ALL

Subaru

 

Legacy

 

GT SPEC.B

 
ALL
 
Subaru
Legacy
GT SPEC.B

ALL

Subaru

 

Outback

 

XT

 
ALL
 
Subaru
Outback
XT

ALL

Subaru

 

Outback

 

XT LIMITED

 
ALL
 
Subaru
Outback
XT LIMITED

ALL

Subaru

 

WRX STI

 

ALL

 
ALL
 
Subaru
WRX STI
ALL

ALL