Killer B Motorsport 321 Stainless Steel Holy Header With 2-Bolt Flange | Multiple Subaru Fitments (HH-2BOLT)

321 Stainless Steel Holy Header With 2-Bolt Flange by Killer B Motorsport

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.

Please Note: It may not fit some Forester, Outback, and Legacy models with the OEM oil pan and cooler

Features

• 347 stainless Thick-walled cast
• Short Length Equal Primaries
• Symmetrical Primary Design
• Smooth Mandrel Bends
• Thick-Walled 321 Stainless Steel Construction

Benefits

• Less turbulence
• Less header volume and quick spool up
• Helps keep the pulse velocities high and consistent
• Can handle extreme heat

Applications

• 2005-2006 Saab 9-2X
• 2004-2013 Subaru Forester XT
• 2009-2010 Subaru Impreza 2.5GT
• 2002-2014 Subaru WRX
• 2004-2021 Subaru WRX STI
• 2005-2009 Subaru Legacy GT
• 2005-2009 Subaru Outback XT

What’s In The Box?

• 1 – Holy Header

References

• Installation Instructions

Warranty

• Lifetime Warranty