Killer B Holy Header Equal Length 4-1 with Up-Pipe | Subaru WRX 08-14 & STI 04-20 (HH4-1)
$18.99
Holy Header Equal Length 4-2-1 with Up-Pipe by Killer BThese Subaru WRX STi tubular headers have been engineered with the shortest possible primaries with a single secondary significantly decrease header volume allowing exhaust gas pressure to build quickly yet flow freely. Symmetrical 4-1 design maintains high and consistent exhaust velocity…
Holy Header Equal Length 4-2-1 with Up-Pipe by Killer B
These Subaru WRX STi tubular headers have been engineered with the shortest possible primaries with a single secondary significantly decrease header volume allowing exhaust gas pressure to build quickly yet flow freely. 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.
Features
- Cast Collector. The collector is thick walled cast 347 (321) stainless
- Short Equal Length Primaries
- Smooth Mandrel Bends
- Thick Walled 321 Stainless Steel Construction for Long Life
- High Heat Retention
- V-Band Up-Pipe Connection
- Up-Pipe included
- Fits All WRX & STi EJ Series Engines
- Made in the USA!
Applications
- 2002-2014 Subaru WRX
- 2004-2021 Subaru WRX STI
What’s In The Box?
- Header w/ Uppipe
Warranty
- Manufacturer Standard Warranty
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