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Killer B Motorsport 321 Stainless Holy Header/Up-Pipe w/ SwainTech Multi-Layer Ceramic Coating Subaru WRX | STi EJ Series Engine
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This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.
Purchasing this product requires you to sign our Vehicle Compliance Waiver here.
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 decrease header volume significantly, allowing exhaust gas pressure to quickly build. 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 that 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. The casting removes several welds, and each weld removed is one less flow disruption (reduced turbulence). The casting has features milled into it that assure the primary tubes fit VERY concentric every time. Using a casting allows the collector to be designed as a true high velocity merge as opposed to tubing that can only be formed a little bit, and not ideally. The casting is thicker/stronger than formed tube and also holds heat better.
- Short Equal Length Primaries. The shortest possible length primaries that you can have on an Equal Length header. Short means less header volume and quick spool up. Symmetrical Primary Design. All primaries have a similar tube length AND bend geometry. This keeps the pulse velocities high and consistent compared to equal length headers with different (non-symmetrical) primary tubing geometry. Smooth Mandrel Bends. All of the bends utilize a mandrel for smooth non-restrictive flow. Not only that, we use the largest bends possible at every location. It would be cheaper to use 2" bends everywhere, like others do, but that's not going to give the best performance.
- Thick Walled 321 Stainless Steel Construction for Long Life. 321 is alloyed with titanium which costs more, a lot more, but it's the ideal material for high temperature turbocharged applications. 304 stainless would work, yes, but the temperatures on our turbocharged cars can exceed the limits of 304 stainless enough to make them brittle and crack. 321 stainless steel has higher strength and toughness at elevated temperatures, which is why it was developed by the aircraft industry specifically to address 304 stainless manifolds that were cracking. Killer B Motorsport is the only company that manufactures full 321 headers.
- High Heat Retention. 321 stainless steel conducts less heat than 304 stainless steel. The short primaries and properly sized secondaries also pull less heat from the exhaust gasses, increasing turbine efficiency. Large tubing headers expose the exhaust gasses to more surface area, transmitting more heat and reducing exhaust energy. You can also ceramic coat our headers (and keep the warranty) without exceeding the temperature range like you can with 304 stainless.
- V-Band Up-Pipe Connection. Why V-Band? Fast, easy, no gasket, no leaks, perfectly concentric alignment of tubes for no disruption of flow, what's not to like!
- Up-Pipe included. Of course it comes with an Up-Pipe! This header was designed as a complete system. Using other up-pipes would only compromise performance, and nobody wants that.
- Works with OEM EJ25 Oil Pans and Killer B Motorsport Performance Aluminum Oil Pans!
- Fits All WRX & STi EJ Series Engines. Designed to work with OEM location turbo.
- Made in the USA!
- For Instructions CLICK HERE
- Subaru WRX | STi EJ Series Engine
- We do not warranty wrapped headers.
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
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| Make Vehicle | Model | Submodel | Year | Engine | Notes |
|---|---|---|---|---|---|
|
2003-2006 Subaru Baja |
Baja | 2003-2006 | |||
|
1998-2011 Subaru Forester |
Forester | 1998-2011 | |||
|
2004-2011 Subaru Forester XT |
Forester XT | 2004-2011 | |||
|
2002-2014 Subaru Impreza |
Impreza | 2002-2014 | |||
|
1998-2005 Subaru Legacy |
Legacy | 1998-2005 | |||
|
1998-2005 Subaru Outback |
Outback | 1998-2005 | |||
|
2014-2021 Subaru STI |
STI | 2014-2021 | |||
|
2014-2021 Subaru WRX |
WRX | 2014-2021 |
Who is Killer B?
Killer B is an aftermarket company based in Waynesboro Virginia. They are known for producing parts and accessories for the automotive industry, specifically, Subaru made vehicles. The company started out in a small garage equipped with only a handful of tools, passion and enthusiasm for cars. Today, they are one of the go-to Subaru experts in the market.
Hands-On Company
The company has involved itself with various racing teams and ordinary daily drivers to understand what their customers want. By getting information directly from them, they are able to produce parts that satisfy their actual needs. Over the years, they were able to perfect their craft and become experts when it comes to the Subarus.
Quality Products
All of their products are done in-house, from design to actual manufacturing and fabrication. This allows them to have full control over their quality. and at the same time, ensure that their products come out the way they would like it to be. Designed by enthusiasts for fellow enthusiasts, you can be sure that you will only be getting the best value for your money.
Purchase Killer B Products At Vivid Racing
If you own a Subaru and are in the market for high-quality performance parts and accessories for your vehicle, then Killer B is the brand for you. Dealing with Subaru’s, they understand what it takes to improve your vehicle’s visual look and performance. To know more about Killer B, visit Vivid Racing and check out their list of products that fit your specific requirement.
All Killer B Motorsport parts have a Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferable. If the product fails it would need to be determined by Killer B Motorsport that it is due to manufacturing defects in materials or workmanship. This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. Killer B Motorsport will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.).
Warranty claims must be shipped back to Killer B Motorsport for review. You must call or email for return authorization prior to returning the product. For warranty evaluation please return your item to Killer B Motorsport Warranty, 1 Solution Way, Suite 201, Waynesboro, VA 22980.
Warranty claims will not be honored if the product was not purchase through an approved dealer.
Killer B Motorsport does not Warranty Wrapped Headers.
Warranty claims must be shipped back to Killer B Motorsport for review. You must call or email for return authorization prior to returning the product. For warranty evaluation please return your item to Killer B Motorsport Warranty, 1 Solution Way, Suite 201, Waynesboro, VA 22980.
Warranty claims will not be honored if the product was not purchase through an approved dealer.
Killer B Motorsport does not Warranty Wrapped Headers.
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