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Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)
Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)
Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)
Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)
Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)
Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)
Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)
Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)
Community Media
User Media for: Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)
User Media for: Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)
User Media for: Killer B Motorsport 4-1 Holy Header Coated - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)

Killer B Motorsport 4-1 Holy Header Coated

Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)

Was: $1,898.10
$1,687.20
You save:
11%
($210.90)
msrp: $2,109.00

Estimated to ship in 101 days
You will earn Reward Points with this Purchase.
ANY QUESTIONS?

Features & Product Details

RallySport Direct proudly carries an excellent collection of quality upgrades brought to you by the metal artists at Killer B Motorsport. 

 

This example is the popular Killer B Motorsport SWAIN Coated 321 Stainless Steel Holy Header. This header and/or exhaust manifold is a great way to increase the exhaust flow due to the smooth bends in the design that will optimize the exhaust flow. This will help maximize the flow potential of your turbocharger which will also reduce the spool time. This is an equal-length design that will produce an aggressive exhaust note while improving the performance and response throughout the entire RPM band. 

 

 

 

FEATURES:

  • CAST COLLECTOR: The collector is made of thick-walled cast 347 stainless. This design removes several welds which removes flow disruption for less turbulence. This also allows the collector to be designed as a true high-velocity merge.
  • SHORT EQUAL LENGTH PRIMARIES: Shorter length primaries make for an equal length header which means less header volume and quick spool up. 
  • SYMMETRICAL PRIMARY DESIGN: A similar tube length and bend geometry will keep the pulse velocities high and consistent when compared to equal length headers with different non-symmetrical primary tubing geometry.
  • SMOOTH MANDREL BENDS: All the bends utilize a mandrel to promote non-restrictive flow, and Killer B uses the largest bends possible at every location. 
  • THICK WALLED 321 STAINLESS STEEL CONSTRUCTION FOR LONG LIFE: 321 is alloyed with titanium which not only costs more but it is ideal to handle the elements of extreme heat found in the turbocharger. With that being said, the turbocharger will create heat that will surpass the limits of 304 stainless steel, and 321 is more robust to promote longer life. 
  • V-BAND UP PIPE CONNECTION for fast and easy installation without leaks and for perfect alignment
  • SWAIN COATED: Heat coated to reduce the temperatures in the engine bay, protects against heat soak 
  • Up-Pipe Included and has been specifically designed to work with the Holy Header
  • Weighs 17lbs
  • Works with OEM EJ25 oil pans along with the Killer B Motorsport Performance Aluminum Oil Pan
  • Made in the USA
  •  

     

     

    NOTE:

  • May not fit some Forester, Outback, and Legacy models with the OEM oil cooler
  •  

    Specifications

    Brand: Killer B Motorsport
    Includes Catalytic Converter: No
    Installation Hardware Included: No
    Manifold Design: Equal Length
    Piping Coating: Yes
    Piping Flex Joint: No
    Piping Material: 321 Stainless Steel
    Piping Taper: No
    Mfgr. Warranty: Lifetime
    Condition: New Product
    Return Policy:
    Standard

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    3 Reviews
    4.3 out of 5 Stars
    5 Stars
    (2)
    4 Stars
    (0)
    3 Stars
    (1)
    2 Stars
    (0)
    1 Stars
    (0)
    Customer Photos and Videos
    Killer B Motorsport 4-1 Holy Header Coated ( Part Number: HH4-1-SWAIN)
    Killer B Motorsport 4-1 Holy Header Coated ( Part Number: HH4-1-SWAIN)
    Killer B Motorsport 4-1 Holy Header Coated ( Part Number: HH4-1-SWAIN)
    1 of 1 people found the following review helpful
    Great header! 2 years ago
    5out of 5stars
    Gix3r
    Beautifully constructed, solid header, shipped with premium packaging to ensure it gets to you the way it left Killer B. I was honestly impressed just opening the box, you don't often see this much care taken with exhaust parts. After the install I could definitely feel a difference in response compared to the factory exhaust manifold. Weight compared to the factory unit is way down. The coating on the header was perfect. I still need a tune to take advantage of it. I'll be doing that after a few more things are taken care of. I've been sitting on this for a while and am glad its finally on the car and not sitting in a box. I know a lot of people are interested in the sound but it depends on your exhaust I'm sure. On my vehicle after the up-pipe is a VF48HF, Cobb GESI DP attached to a MadDad Whisper 3" Catback Dual Tip Exhaust. IMO, it sounds great! I don't miss the old sound at all. I thought it was going to be ridiculously louder based on others describing their header upgrades but IMO its not. The exhaust sound while cruising is much more tolerable with the ELH...guess I'm just getting old since I even mention that. The install wasn't terrible, but, I wish instructions were included for this specific header with v-band, Killer B does have instructions for the 2 bolt version. I'm not a tech, just a guy that likes to wrench on his car a little. Throwing the band on isn't a big deal but I didn't have experience with them and every bit of information helps, Killer B did answer questions when contacted though. Also because of the headers design, getting to the inner bolts were a serious PITA, never mind getting a torque wrench on them, not a deal breaker, just annoying. Overall I am happy with the purchase and RSD provided a good price at the time of purchase and quick shipping as they always do.
      
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    The best header out. 4 years ago
    5out of 5stars
    Astro_Fresco
    First off, RSD shipping is always fantastic. I decided to go up to a 20g turbo and wanted to minimize turbo lag so I went with these headers on my tuner's recommendation. Killer B's build quality is incredible and install is about what you would expect with any header and up-pipe. I have these coupled with the Grimmspeed limited downpipe and the SPT cat-back and I really enjoy the sound. You will loose the 'Subaru wobble' sound but my car now has a deep smooth growl that, although different, sounds more like a racecar. During revs, pulls, or highway driving there is so rasp, rattle, or drone. The only thing I am not super sold on is the coating. There is nothing wrong with it but it my not be completely necessary for the cost difference.
      
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    4 of 4 people found the following review helpful
    A little disappointed with fitment 5 years ago
    3out of 5stars
    Ssawyer
    I purchased this header with the up pipe a while ago and finally had time to install it. Overall the quality is really nice and the coating is great. We installed this on my 2007 wrx. At first we realized we had to cut part of the subframe which in my opinion wasn’t a big deal. The real problem came up when the oil filter was touching the header and made it impossible to change your oil. We had to remove the factory oil cooler/warmer in order to have enough clearance between the header and filter. For a subaru specific brand I thought this was ridiculous. Attached are pictures showing that you can’t fit a piece of paper between the 2. I don’t have a picture of after the removal of the oil cooler/warmer but you can easily fit a phone book between the 2. On the up side, I went from tomei uel headers to these and the sound is still nice in my opinion.
      
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    QUESTIONS & ANSWERS

    • Q: Good for stock set up?  Phelpzy3 years ago

      Are these headers good for a stock turbo and engine set up? Looking into getting down pipe and rear exhaust
      • 0 of 0 people found the following answer helpful

        A:  It would be a bit overkill for a stock setup, but not in a bad way. This is a killer setup all around and you would certainly benefit from it :)

        Rick C. @ RallySport Direct 3 years ago  
          
        Was this answer helpful?
    • Q: Fitment with 2012 wrx sedan premium  Stinkeye2012wrx4 years ago

      Will this require any cutting or removing oil coolers? Also how many and which gaskets are needed and how many studs and which? Does this fit with the killer b aluminum oil pan? Does it come with hardware?
      • 1 of 1 people found the following answer helpful

        A:  Hello, it sounds like you have many questions for this product. please give us a call or chat to talk this over with one of our representatives!

        Devan M. @ RallySport Direct 4 years ago  
          
        Was this answer helpful?
      • 1 of 1 people found the following answer helpful

        A:  Some 2007-2009 WRXs can come with an oddball offset or angled oil cooler. This puts the filter close to the header like in Ssawyer's review. There are a couple of options if you run into this. 1) loosen the oil cooler and clock it until the filter has more clearance. 2) Replace the oil cooler with an STi version of the oil cooler, or 3) remove the oil cooler (some 2009 WRXs come from the factory with NO oil filter. I don't know what he's talking about in regards to the chassis clearance since the header tubes do not come anywhere near it

        Katy Boyd @ Killer B Motorsport 4 years ago  
          
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    • Q: Fitment to turbo  dsammy19945 years ago

      will this fit with the FP Green HTZ Turbo?
    • Q: Aftermarket splashguard clearance  tcmiling5 years ago

      I have a TBW Performance aftermarket splash guard.....am I going to have clearance issues? Thanks
      • 0 of 0 people found the following answer helpful

        A:  We can not confirm this header with an aftermarket splash guard.

        Luis L. @ RallySport Direct 5 years ago  
          
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      • 2 of 2 people found the following answer helpful

        A:  I purchased and installed this header and I can confirm that it does fit with the TBW splash guard

        tcmiling @
          
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